docs/dyn/servicemanagement_v1.services.configs.html

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<h1><a href="servicemanagement_v1.html">Service Management API</a> . <a href="servicemanagement_v1.services.html">services</a> . <a href="servicemanagement_v1.services.configs.html">configs</a></h1>
<h2>Instance Methods</h2>
<p class="toc_element">
  <code><a href="#create">create(serviceName, body, x__xgafv=None)</a></code></p>
<p class="firstline">Creates a new service configuration (version) for a managed service.</p>
<p class="toc_element">
  <code><a href="#get">get(serviceName, configId, x__xgafv=None, view=None)</a></code></p>
<p class="firstline">Gets a service configuration (version) for a managed service.</p>
<p class="toc_element">
  <code><a href="#list">list(serviceName, pageSize=None, pageToken=None, x__xgafv=None)</a></code></p>
<p class="firstline">Lists the history of the service configuration for a managed service,</p>
<p class="toc_element">
  <code><a href="#list_next">list_next(previous_request, previous_response)</a></code></p>
<p class="firstline">Retrieves the next page of results.</p>
<p class="toc_element">
  <code><a href="#submit">submit(serviceName, body, x__xgafv=None)</a></code></p>
<p class="firstline">Creates a new service configuration (version) for a managed service based</p>
<h3>Method Details</h3>
<div class="method">
    <code class="details" id="create">create(serviceName, body, x__xgafv=None)</code>
  <pre>Creates a new service configuration (version) for a managed service.
This method only stores the service configuration. To roll out the service
configuration to backend systems please call
CreateServiceRollout.

Only the 100 most recent service configurations and ones referenced by
existing rollouts are kept for each service. The rest will be deleted
eventually.

Args:
  serviceName: string, The name of the service.  See the [overview](/service-management/overview)
for naming requirements.  For example: `example.googleapis.com`. (required)
  body: object, The request body. (required)
    The object takes the form of:

{ # `Service` is the root object of Google service configuration schema. It
    # describes basic information about a service, such as the name and the
    # title, and delegates other aspects to sub-sections. Each sub-section is
    # either a proto message or a repeated proto message that configures a
    # specific aspect, such as auth. See each proto message definition for details.
    #
    # Example:
    #
    #     type: google.api.Service
    #     config_version: 3
    #     name: calendar.googleapis.com
    #     title: Google Calendar API
    #     apis:
    #     - name: google.calendar.v3.Calendar
    #     authentication:
    #       providers:
    #       - id: google_calendar_auth
    #         jwks_uri: https://www.googleapis.com/oauth2/v1/certs
    #         issuer: https://securetoken.google.com
    #       rules:
    #       - selector: "*"
    #         requirements:
    #           provider_id: google_calendar_auth
  "control": { # Selects and configures the service controller used by the service.  The # Configuration for the service control plane.
      # service controller handles features like abuse, quota, billing, logging,
      # monitoring, etc.
    "environment": "A String", # The service control environment to use. If empty, no control plane
        # feature (like quota and billing) will be enabled.
  },
  "monitoredResources": [ # Defines the monitored resources used by this service. This is required
      # by the Service.monitoring and Service.logging configurations.
    { # An object that describes the schema of a MonitoredResource object using a
        # type name and a set of labels.  For example, the monitored resource
        # descriptor for Google Compute Engine VM instances has a type of
        # `"gce_instance"` and specifies the use of the labels `"instance_id"` and
        # `"zone"` to identify particular VM instances.
        #
        # Different APIs can support different monitored resource types. APIs generally
        # provide a `list` method that returns the monitored resource descriptors used
        # by the API.
        #
        # Next ID: 10
      "displayName": "A String", # Optional. A concise name for the monitored resource type that might be
          # displayed in user interfaces. It should be a Title Cased Noun Phrase,
          # without any article or other determiners. For example,
          # `"Google Cloud SQL Database"`.
      "name": "A String", # Optional. The resource name of the monitored resource descriptor:
          # `"projects/{project_id}/monitoredResourceDescriptors/{type}"` where
          # {type} is the value of the `type` field in this object and
          # {project_id} is a project ID that provides API-specific context for
          # accessing the type.  APIs that do not use project information can use the
          # resource name format `"monitoredResourceDescriptors/{type}"`.
      "labels": [ # Required. A set of labels used to describe instances of this monitored
          # resource type. For example, an individual Google Cloud SQL database is
          # identified by values for the labels `"database_id"` and `"zone"`.
        { # A description of a label.
          "valueType": "A String", # The type of data that can be assigned to the label.
          "description": "A String", # A human-readable description for the label.
          "key": "A String", # The label key.
        },
      ],
      "launchStage": "A String", # Optional. The launch stage of the monitored resource definition.
      "type": "A String", # Required. The monitored resource type. For example, the type
          # `"cloudsql_database"` represents databases in Google Cloud SQL.
          # The maximum length of this value is 256 characters.
      "description": "A String", # Optional. A detailed description of the monitored resource type that might
          # be used in documentation.
    },
  ],
  "logs": [ # Defines the logs used by this service.
    { # A description of a log type. Example in YAML format:
        #
        #     - name: library.googleapis.com/activity_history
        #       description: The history of borrowing and returning library items.
        #       display_name: Activity
        #       labels:
        #       - key: /customer_id
        #         description: Identifier of a library customer
      "labels": [ # The set of labels that are available to describe a specific log entry.
          # Runtime requests that contain labels not specified here are
          # considered invalid.
        { # A description of a label.
          "valueType": "A String", # The type of data that can be assigned to the label.
          "description": "A String", # A human-readable description for the label.
          "key": "A String", # The label key.
        },
      ],
      "displayName": "A String", # The human-readable name for this log. This information appears on
          # the user interface and should be concise.
      "name": "A String", # The name of the log. It must be less than 512 characters long and can
          # include the following characters: upper- and lower-case alphanumeric
          # characters [A-Za-z0-9], and punctuation characters including
          # slash, underscore, hyphen, period [/_-.].
      "description": "A String", # A human-readable description of this log. This information appears in
          # the documentation and can contain details.
    },
  ],
  "systemParameters": { # ### System parameter configuration # System parameter configuration.
      #
      # A system parameter is a special kind of parameter defined by the API
      # system, not by an individual API. It is typically mapped to an HTTP header
      # and/or a URL query parameter. This configuration specifies which methods
      # change the names of the system parameters.
    "rules": [ # Define system parameters.
        #
        # The parameters defined here will override the default parameters
        # implemented by the system. If this field is missing from the service
        # config, default system parameters will be used. Default system parameters
        # and names is implementation-dependent.
        #
        # Example: define api key for all methods
        #
        #     system_parameters
        #       rules:
        #         - selector: "*"
        #           parameters:
        #             - name: api_key
        #               url_query_parameter: api_key
        #
        #
        # Example: define 2 api key names for a specific method.
        #
        #     system_parameters
        #       rules:
        #         - selector: "/ListShelves"
        #           parameters:
        #             - name: api_key
        #               http_header: Api-Key1
        #             - name: api_key
        #               http_header: Api-Key2
        #
        # **NOTE:** All service configuration rules follow "last one wins" order.
      { # Define a system parameter rule mapping system parameter definitions to
          # methods.
        "parameters": [ # Define parameters. Multiple names may be defined for a parameter.
            # For a given method call, only one of them should be used. If multiple
            # names are used the behavior is implementation-dependent.
            # If none of the specified names are present the behavior is
            # parameter-dependent.
          { # Define a parameter's name and location. The parameter may be passed as either
              # an HTTP header or a URL query parameter, and if both are passed the behavior
              # is implementation-dependent.
            "urlQueryParameter": "A String", # Define the URL query parameter name to use for the parameter. It is case
                # sensitive.
            "httpHeader": "A String", # Define the HTTP header name to use for the parameter. It is case
                # insensitive.
            "name": "A String", # Define the name of the parameter, such as "api_key" . It is case sensitive.
          },
        ],
        "selector": "A String", # Selects the methods to which this rule applies. Use '*' to indicate all
            # methods in all APIs.
            #
            # Refer to selector for syntax details.
      },
    ],
  },
  "id": "A String", # A unique ID for a specific instance of this message, typically assigned
      # by the client for tracking purpose. If empty, the server may choose to
      # generate one instead. Must be no longer than 60 characters.
  "backend": { # `Backend` defines the backend configuration for a service. # API backend configuration.
    "rules": [ # A list of API backend rules that apply to individual API methods.
        #
        # **NOTE:** All service configuration rules follow "last one wins" order.
      { # A backend rule provides configuration for an individual API element.
        "jwtAudience": "A String", # The JWT audience is used when generating a JWT id token for the backend.
        "pathTranslation": "A String",
        "minDeadline": 3.14, # Minimum deadline in seconds needed for this method. Calls having deadline
            # value lower than this will be rejected.
        "selector": "A String", # Selects the methods to which this rule applies.
            #
            # Refer to selector for syntax details.
        "operationDeadline": 3.14, # The number of seconds to wait for the completion of a long running
            # operation. The default is no deadline.
        "deadline": 3.14, # The number of seconds to wait for a response from a request.  The default
            # deadline for gRPC is infinite (no deadline) and HTTP requests is 5 seconds.
        "address": "A String", # The address of the API backend.
      },
    ],
  },
  "monitoring": { # Monitoring configuration of the service. # Monitoring configuration.
      #
      # The example below shows how to configure monitored resources and metrics
      # for monitoring. In the example, a monitored resource and two metrics are
      # defined. The `library.googleapis.com/book/returned_count` metric is sent
      # to both producer and consumer projects, whereas the
      # `library.googleapis.com/book/overdue_count` metric is only sent to the
      # consumer project.
      #
      #     monitored_resources:
      #     - type: library.googleapis.com/branch
      #       labels:
      #       - key: /city
      #         description: The city where the library branch is located in.
      #       - key: /name
      #         description: The name of the branch.
      #     metrics:
      #     - name: library.googleapis.com/book/returned_count
      #       metric_kind: DELTA
      #       value_type: INT64
      #       labels:
      #       - key: /customer_id
      #     - name: library.googleapis.com/book/overdue_count
      #       metric_kind: GAUGE
      #       value_type: INT64
      #       labels:
      #       - key: /customer_id
      #     monitoring:
      #       producer_destinations:
      #       - monitored_resource: library.googleapis.com/branch
      #         metrics:
      #         - library.googleapis.com/book/returned_count
      #       consumer_destinations:
      #       - monitored_resource: library.googleapis.com/branch
      #         metrics:
      #         - library.googleapis.com/book/returned_count
      #         - library.googleapis.com/book/overdue_count
    "producerDestinations": [ # Monitoring configurations for sending metrics to the producer project.
        # There can be multiple producer destinations. A monitored resouce type may
        # appear in multiple monitoring destinations if different aggregations are
        # needed for different sets of metrics associated with that monitored
        # resource type. A monitored resource and metric pair may only be used once
        # in the Monitoring configuration.
      { # Configuration of a specific monitoring destination (the producer project
          # or the consumer project).
        "monitoredResource": "A String", # The monitored resource type. The type must be defined in
            # Service.monitored_resources section.
        "metrics": [ # Types of the metrics to report to this monitoring destination.
            # Each type must be defined in Service.metrics section.
          "A String",
        ],
      },
    ],
    "consumerDestinations": [ # Monitoring configurations for sending metrics to the consumer project.
        # There can be multiple consumer destinations. A monitored resouce type may
        # appear in multiple monitoring destinations if different aggregations are
        # needed for different sets of metrics associated with that monitored
        # resource type. A monitored resource and metric pair may only be used once
        # in the Monitoring configuration.
      { # Configuration of a specific monitoring destination (the producer project
          # or the consumer project).
        "monitoredResource": "A String", # The monitored resource type. The type must be defined in
            # Service.monitored_resources section.
        "metrics": [ # Types of the metrics to report to this monitoring destination.
            # Each type must be defined in Service.metrics section.
          "A String",
        ],
      },
    ],
  },
  "billing": { # Billing related configuration of the service. # Billing configuration.
      #
      # The following example shows how to configure monitored resources and metrics
      # for billing:
      #
      #     monitored_resources:
      #     - type: library.googleapis.com/branch
      #       labels:
      #       - key: /city
      #         description: The city where the library branch is located in.
      #       - key: /name
      #         description: The name of the branch.
      #     metrics:
      #     - name: library.googleapis.com/book/borrowed_count
      #       metric_kind: DELTA
      #       value_type: INT64
      #     billing:
      #       consumer_destinations:
      #       - monitored_resource: library.googleapis.com/branch
      #         metrics:
      #         - library.googleapis.com/book/borrowed_count
    "consumerDestinations": [ # Billing configurations for sending metrics to the consumer project.
        # There can be multiple consumer destinations per service, each one must have
        # a different monitored resource type. A metric can be used in at most
        # one consumer destination.
      { # Configuration of a specific billing destination (Currently only support
          # bill against consumer project).
        "monitoredResource": "A String", # The monitored resource type. The type must be defined in
            # Service.monitored_resources section.
        "metrics": [ # Names of the metrics to report to this billing destination.
            # Each name must be defined in Service.metrics section.
          "A String",
        ],
      },
    ],
  },
  "title": "A String", # The product title for this service.
  "authentication": { # `Authentication` defines the authentication configuration for an API. # Auth configuration.
      #
      # Example for an API targeted for external use:
      #
      #     name: calendar.googleapis.com
      #     authentication:
      #       providers:
      #       - id: google_calendar_auth
      #         jwks_uri: https://www.googleapis.com/oauth2/v1/certs
      #         issuer: https://securetoken.google.com
      #       rules:
      #       - selector: "*"
      #         requirements:
      #           provider_id: google_calendar_auth
    "rules": [ # A list of authentication rules that apply to individual API methods.
        #
        # **NOTE:** All service configuration rules follow "last one wins" order.
      { # Authentication rules for the service.
          #
          # By default, if a method has any authentication requirements, every request
          # must include a valid credential matching one of the requirements.
          # It's an error to include more than one kind of credential in a single
          # request.
          #
          # If a method doesn't have any auth requirements, request credentials will be
          # ignored.
        "oauth": { # OAuth scopes are a way to define data and permissions on data. For example, # The requirements for OAuth credentials.
            # there are scopes defined for "Read-only access to Google Calendar" and
            # "Access to Cloud Platform". Users can consent to a scope for an application,
            # giving it permission to access that data on their behalf.
            #
            # OAuth scope specifications should be fairly coarse grained; a user will need
            # to see and understand the text description of what your scope means.
            #
            # In most cases: use one or at most two OAuth scopes for an entire family of
            # products. If your product has multiple APIs, you should probably be sharing
            # the OAuth scope across all of those APIs.
            #
            # When you need finer grained OAuth consent screens: talk with your product
            # management about how developers will use them in practice.
            #
            # Please note that even though each of the canonical scopes is enough for a
            # request to be accepted and passed to the backend, a request can still fail
            # due to the backend requiring additional scopes or permissions.
          "canonicalScopes": "A String", # The list of publicly documented OAuth scopes that are allowed access. An
              # OAuth token containing any of these scopes will be accepted.
              #
              # Example:
              #
              #      canonical_scopes: https://www.googleapis.com/auth/calendar,
              #                        https://www.googleapis.com/auth/calendar.read
        },
        "allowWithoutCredential": True or False, # If true, the service accepts API keys without any other credential.
        "requirements": [ # Requirements for additional authentication providers.
          { # User-defined authentication requirements, including support for
              # [JSON Web Token
              # (JWT)](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32).
            "providerId": "A String", # id from authentication provider.
                #
                # Example:
                #
                #     provider_id: bookstore_auth
            "audiences": "A String", # NOTE: This will be deprecated soon, once AuthProvider.audiences is
                # implemented and accepted in all the runtime components.
                #
                # The list of JWT
                # [audiences](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.3).
                # that are allowed to access. A JWT containing any of these audiences will
                # be accepted. When this setting is absent, only JWTs with audience
                # "https://Service_name/API_name"
                # will be accepted. For example, if no audiences are in the setting,
                # LibraryService API will only accept JWTs with the following audience
                # "https://library-example.googleapis.com/google.example.library.v1.LibraryService".
                #
                # Example:
                #
                #     audiences: bookstore_android.apps.googleusercontent.com,
                #                bookstore_web.apps.googleusercontent.com
          },
        ],
        "selector": "A String", # Selects the methods to which this rule applies.
            #
            # Refer to selector for syntax details.
      },
    ],
    "providers": [ # Defines a set of authentication providers that a service supports.
      { # Configuration for an authentication provider, including support for
          # [JSON Web Token
          # (JWT)](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32).
        "jwksUri": "A String", # URL of the provider's public key set to validate signature of the JWT. See
            # [OpenID
            # Discovery](https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderMetadata).
            # Optional if the key set document:
            #  - can be retrieved from
            #    [OpenID
            #    Discovery](https://openid.net/specs/openid-connect-discovery-1_0.html of
            #    the issuer.
            #  - can be inferred from the email domain of the issuer (e.g. a Google
            #  service account).
            #
            # Example: https://www.googleapis.com/oauth2/v1/certs
        "audiences": "A String", # The list of JWT
            # [audiences](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.3).
            # that are allowed to access. A JWT containing any of these audiences will
            # be accepted. When this setting is absent, only JWTs with audience
            # "https://Service_name/API_name"
            # will be accepted. For example, if no audiences are in the setting,
            # LibraryService API will only accept JWTs with the following audience
            # "https://library-example.googleapis.com/google.example.library.v1.LibraryService".
            #
            # Example:
            #
            #     audiences: bookstore_android.apps.googleusercontent.com,
            #                bookstore_web.apps.googleusercontent.com
        "id": "A String", # The unique identifier of the auth provider. It will be referred to by
            # `AuthRequirement.provider_id`.
            #
            # Example: "bookstore_auth".
        "authorizationUrl": "A String", # Redirect URL if JWT token is required but not present or is expired.
            # Implement authorizationUrl of securityDefinitions in OpenAPI spec.
        "issuer": "A String", # Identifies the principal that issued the JWT. See
            # https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.1
            # Usually a URL or an email address.
            #
            # Example: https://securetoken.google.com
            # Example: 1234567-compute@developer.gserviceaccount.com
      },
    ],
  },
  "usage": { # Configuration controlling usage of a service. # Configuration controlling usage of this service.
    "rules": [ # A list of usage rules that apply to individual API methods.
        #
        # **NOTE:** All service configuration rules follow "last one wins" order.
      { # Usage configuration rules for the service.
          #
          # NOTE: Under development.
          #
          #
          # Use this rule to configure unregistered calls for the service. Unregistered
          # calls are calls that do not contain consumer project identity.
          # (Example: calls that do not contain an API key).
          # By default, API methods do not allow unregistered calls, and each method call
          # must be identified by a consumer project identity. Use this rule to
          # allow/disallow unregistered calls.
          #
          # Example of an API that wants to allow unregistered calls for entire service.
          #
          #     usage:
          #       rules:
          #       - selector: "*"
          #         allow_unregistered_calls: true
          #
          # Example of a method that wants to allow unregistered calls.
          #
          #     usage:
          #       rules:
          #       - selector: "google.example.library.v1.LibraryService.CreateBook"
          #         allow_unregistered_calls: true
        "skipServiceControl": True or False, # If true, the selected method should skip service control and the control
            # plane features, such as quota and billing, will not be available.
            # This flag is used by Google Cloud Endpoints to bypass checks for internal
            # methods, such as service health check methods.
        "allowUnregisteredCalls": True or False, # If true, the selected method allows unregistered calls, e.g. calls
            # that don't identify any user or application.
        "selector": "A String", # Selects the methods to which this rule applies. Use '*' to indicate all
            # methods in all APIs.
            #
            # Refer to selector for syntax details.
      },
    ],
    "producerNotificationChannel": "A String", # The full resource name of a channel used for sending notifications to the
        # service producer.
        #
        # Google Service Management currently only supports
        # [Google Cloud Pub/Sub](https://cloud.google.com/pubsub) as a notification
        # channel. To use Google Cloud Pub/Sub as the channel, this must be the name
        # of a Cloud Pub/Sub topic that uses the Cloud Pub/Sub topic name format
        # documented in https://cloud.google.com/pubsub/docs/overview.
    "requirements": [ # Requirements that must be satisfied before a consumer project can use the
        # service. Each requirement is of the form <service.name>/<requirement-id>;
        # for example 'serviceusage.googleapis.com/billing-enabled'.
      "A String",
    ],
  },
  "configVersion": 42, # The semantic version of the service configuration. The config version
      # affects the interpretation of the service configuration. For example,
      # certain features are enabled by default for certain config versions.
      # The latest config version is `3`.
  "producerProjectId": "A String", # The Google project that owns this service.
  "http": { # Defines the HTTP configuration for an API service. It contains a list of # HTTP configuration.
      # HttpRule, each specifying the mapping of an RPC method
      # to one or more HTTP REST API methods.
    "rules": [ # A list of HTTP configuration rules that apply to individual API methods.
        #
        # **NOTE:** All service configuration rules follow "last one wins" order.
      { # # gRPC Transcoding
          #
          # gRPC Transcoding is a feature for mapping between a gRPC method and one or
          # more HTTP REST endpoints. It allows developers to build a single API service
          # that supports both gRPC APIs and REST APIs. Many systems, including [Google
          # APIs](https://github.com/googleapis/googleapis),
          # [Cloud Endpoints](https://cloud.google.com/endpoints), [gRPC
          # Gateway](https://github.com/grpc-ecosystem/grpc-gateway),
          # and [Envoy](https://github.com/envoyproxy/envoy) proxy support this feature
          # and use it for large scale production services.
          #
          # `HttpRule` defines the schema of the gRPC/REST mapping. The mapping specifies
          # how different portions of the gRPC request message are mapped to the URL
          # path, URL query parameters, and HTTP request body. It also controls how the
          # gRPC response message is mapped to the HTTP response body. `HttpRule` is
          # typically specified as an `google.api.http` annotation on the gRPC method.
          #
          # Each mapping specifies a URL path template and an HTTP method. The path
          # template may refer to one or more fields in the gRPC request message, as long
          # as each field is a non-repeated field with a primitive (non-message) type.
          # The path template controls how fields of the request message are mapped to
          # the URL path.
          #
          # Example:
          #
          #     service Messaging {
          #       rpc GetMessage(GetMessageRequest) returns (Message) {
          #         option (google.api.http) = {
          #             get: "/v1/{name=messages/*}"
          #         };
          #       }
          #     }
          #     message GetMessageRequest {
          #       string name = 1; // Mapped to URL path.
          #     }
          #     message Message {
          #       string text = 1; // The resource content.
          #     }
          #
          # This enables an HTTP REST to gRPC mapping as below:
          #
          # HTTP | gRPC
          # -----|-----
          # `GET /v1/messages/123456`  | `GetMessage(name: "messages/123456")`
          #
          # Any fields in the request message which are not bound by the path template
          # automatically become HTTP query parameters if there is no HTTP request body.
          # For example:
          #
          #     service Messaging {
          #       rpc GetMessage(GetMessageRequest) returns (Message) {
          #         option (google.api.http) = {
          #             get:"/v1/messages/{message_id}"
          #         };
          #       }
          #     }
          #     message GetMessageRequest {
          #       message SubMessage {
          #         string subfield = 1;
          #       }
          #       string message_id = 1; // Mapped to URL path.
          #       int64 revision = 2;    // Mapped to URL query parameter `revision`.
          #       SubMessage sub = 3;    // Mapped to URL query parameter `sub.subfield`.
          #     }
          #
          # This enables a HTTP JSON to RPC mapping as below:
          #
          # HTTP | gRPC
          # -----|-----
          # `GET /v1/messages/123456?revision=2&sub.subfield=foo` |
          # `GetMessage(message_id: "123456" revision: 2 sub: SubMessage(subfield:
          # "foo"))`
          #
          # Note that fields which are mapped to URL query parameters must have a
          # primitive type or a repeated primitive type or a non-repeated message type.
          # In the case of a repeated type, the parameter can be repeated in the URL
          # as `...?param=A&param=B`. In the case of a message type, each field of the
          # message is mapped to a separate parameter, such as
          # `...?foo.a=A&foo.b=B&foo.c=C`.
          #
          # For HTTP methods that allow a request body, the `body` field
          # specifies the mapping. Consider a REST update method on the
          # message resource collection:
          #
          #     service Messaging {
          #       rpc UpdateMessage(UpdateMessageRequest) returns (Message) {
          #         option (google.api.http) = {
          #           patch: "/v1/messages/{message_id}"
          #           body: "message"
          #         };
          #       }
          #     }
          #     message UpdateMessageRequest {
          #       string message_id = 1; // mapped to the URL
          #       Message message = 2;   // mapped to the body
          #     }
          #
          # The following HTTP JSON to RPC mapping is enabled, where the
          # representation of the JSON in the request body is determined by
          # protos JSON encoding:
          #
          # HTTP | gRPC
          # -----|-----
          # `PATCH /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id:
          # "123456" message { text: "Hi!" })`
          #
          # The special name `*` can be used in the body mapping to define that
          # every field not bound by the path template should be mapped to the
          # request body.  This enables the following alternative definition of
          # the update method:
          #
          #     service Messaging {
          #       rpc UpdateMessage(Message) returns (Message) {
          #         option (google.api.http) = {
          #           patch: "/v1/messages/{message_id}"
          #           body: "*"
          #         };
          #       }
          #     }
          #     message Message {
          #       string message_id = 1;
          #       string text = 2;
          #     }
          #
          #
          # The following HTTP JSON to RPC mapping is enabled:
          #
          # HTTP | gRPC
          # -----|-----
          # `PATCH /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id:
          # "123456" text: "Hi!")`
          #
          # Note that when using `*` in the body mapping, it is not possible to
          # have HTTP parameters, as all fields not bound by the path end in
          # the body. This makes this option more rarely used in practice when
          # defining REST APIs. The common usage of `*` is in custom methods
          # which don't use the URL at all for transferring data.
          #
          # It is possible to define multiple HTTP methods for one RPC by using
          # the `additional_bindings` option. Example:
          #
          #     service Messaging {
          #       rpc GetMessage(GetMessageRequest) returns (Message) {
          #         option (google.api.http) = {
          #           get: "/v1/messages/{message_id}"
          #           additional_bindings {
          #             get: "/v1/users/{user_id}/messages/{message_id}"
          #           }
          #         };
          #       }
          #     }
          #     message GetMessageRequest {
          #       string message_id = 1;
          #       string user_id = 2;
          #     }
          #
          # This enables the following two alternative HTTP JSON to RPC mappings:
          #
          # HTTP | gRPC
          # -----|-----
          # `GET /v1/messages/123456` | `GetMessage(message_id: "123456")`
          # `GET /v1/users/me/messages/123456` | `GetMessage(user_id: "me" message_id:
          # "123456")`
          #
          # ## Rules for HTTP mapping
          #
          # 1. Leaf request fields (recursive expansion nested messages in the request
          #    message) are classified into three categories:
          #    - Fields referred by the path template. They are passed via the URL path.
          #    - Fields referred by the HttpRule.body. They are passed via the HTTP
          #      request body.
          #    - All other fields are passed via the URL query parameters, and the
          #      parameter name is the field path in the request message. A repeated
          #      field can be represented as multiple query parameters under the same
          #      name.
          #  2. If HttpRule.body is "*", there is no URL query parameter, all fields
          #     are passed via URL path and HTTP request body.
          #  3. If HttpRule.body is omitted, there is no HTTP request body, all
          #     fields are passed via URL path and URL query parameters.
          #
          # ### Path template syntax
          #
          #     Template = "/" Segments [ Verb ] ;
          #     Segments = Segment { "/" Segment } ;
          #     Segment  = "*" | "**" | LITERAL | Variable ;
          #     Variable = "{" FieldPath [ "=" Segments ] "}" ;
          #     FieldPath = IDENT { "." IDENT } ;
          #     Verb     = ":" LITERAL ;
          #
          # The syntax `*` matches a single URL path segment. The syntax `**` matches
          # zero or more URL path segments, which must be the last part of the URL path
          # except the `Verb`.
          #
          # The syntax `Variable` matches part of the URL path as specified by its
          # template. A variable template must not contain other variables. If a variable
          # matches a single path segment, its template may be omitted, e.g. `{var}`
          # is equivalent to `{var=*}`.
          #
          # The syntax `LITERAL` matches literal text in the URL path. If the `LITERAL`
          # contains any reserved character, such characters should be percent-encoded
          # before the matching.
          #
          # If a variable contains exactly one path segment, such as `"{var}"` or
          # `"{var=*}"`, when such a variable is expanded into a URL path on the client
          # side, all characters except `[-_.~0-9a-zA-Z]` are percent-encoded. The
          # server side does the reverse decoding. Such variables show up in the
          # [Discovery
          # Document](https://developers.google.com/discovery/v1/reference/apis) as
          # `{var}`.
          #
          # If a variable contains multiple path segments, such as `"{var=foo/*}"`
          # or `"{var=**}"`, when such a variable is expanded into a URL path on the
          # client side, all characters except `[-_.~/0-9a-zA-Z]` are percent-encoded.
          # The server side does the reverse decoding, except "%2F" and "%2f" are left
          # unchanged. Such variables show up in the
          # [Discovery
          # Document](https://developers.google.com/discovery/v1/reference/apis) as
          # `{+var}`.
          #
          # ## Using gRPC API Service Configuration
          #
          # gRPC API Service Configuration (service config) is a configuration language
          # for configuring a gRPC service to become a user-facing product. The
          # service config is simply the YAML representation of the `google.api.Service`
          # proto message.
          #
          # As an alternative to annotating your proto file, you can configure gRPC
          # transcoding in your service config YAML files. You do this by specifying a
          # `HttpRule` that maps the gRPC method to a REST endpoint, achieving the same
          # effect as the proto annotation. This can be particularly useful if you
          # have a proto that is reused in multiple services. Note that any transcoding
          # specified in the service config will override any matching transcoding
          # configuration in the proto.
          #
          # Example:
          #
          #     http:
          #       rules:
          #         # Selects a gRPC method and applies HttpRule to it.
          #         - selector: example.v1.Messaging.GetMessage
          #           get: /v1/messages/{message_id}/{sub.subfield}
          #
          # ## Special notes
          #
          # When gRPC Transcoding is used to map a gRPC to JSON REST endpoints, the
          # proto to JSON conversion must follow the [proto3
          # specification](https://developers.google.com/protocol-buffers/docs/proto3#json).
          #
          # While the single segment variable follows the semantics of
          # [RFC 6570](https://tools.ietf.org/html/rfc6570) Section 3.2.2 Simple String
          # Expansion, the multi segment variable **does not** follow RFC 6570 Section
          # 3.2.3 Reserved Expansion. The reason is that the Reserved Expansion
          # does not expand special characters like `?` and `#`, which would lead
          # to invalid URLs. As the result, gRPC Transcoding uses a custom encoding
          # for multi segment variables.
          #
          # The path variables **must not** refer to any repeated or mapped field,
          # because client libraries are not capable of handling such variable expansion.
          #
          # The path variables **must not** capture the leading "/" character. The reason
          # is that the most common use case "{var}" does not capture the leading "/"
          # character. For consistency, all path variables must share the same behavior.
          #
          # Repeated message fields must not be mapped to URL query parameters, because
          # no client library can support such complicated mapping.
          #
          # If an API needs to use a JSON array for request or response body, it can map
          # the request or response body to a repeated field. However, some gRPC
          # Transcoding implementations may not support this feature.
        "body": "A String", # The name of the request field whose value is mapped to the HTTP request
            # body, or `*` for mapping all request fields not captured by the path
            # pattern to the HTTP body, or omitted for not having any HTTP request body.
            #
            # NOTE: the referred field must be present at the top-level of the request
            # message type.
        "additionalBindings": [ # Additional HTTP bindings for the selector. Nested bindings must
            # not contain an `additional_bindings` field themselves (that is,
            # the nesting may only be one level deep).
          # Object with schema name: HttpRule
        ],
        "get": "A String", # Maps to HTTP GET. Used for listing and getting information about
            # resources.
        "patch": "A String", # Maps to HTTP PATCH. Used for updating a resource.
        "custom": { # A custom pattern is used for defining custom HTTP verb. # The custom pattern is used for specifying an HTTP method that is not
            # included in the `pattern` field, such as HEAD, or "*" to leave the
            # HTTP method unspecified for this rule. The wild-card rule is useful
            # for services that provide content to Web (HTML) clients.
          "path": "A String", # The path matched by this custom verb.
          "kind": "A String", # The name of this custom HTTP verb.
        },
        "responseBody": "A String", # Optional. The name of the response field whose value is mapped to the HTTP
            # response body. When omitted, the entire response message will be used
            # as the HTTP response body.
            #
            # NOTE: The referred field must be present at the top-level of the response
            # message type.
        "put": "A String", # Maps to HTTP PUT. Used for replacing a resource.
        "post": "A String", # Maps to HTTP POST. Used for creating a resource or performing an action.
        "selector": "A String", # Selects a method to which this rule applies.
            #
            # Refer to selector for syntax details.
        "delete": "A String", # Maps to HTTP DELETE. Used for deleting a resource.
      },
    ],
    "fullyDecodeReservedExpansion": True or False, # When set to true, URL path parameters will be fully URI-decoded except in
        # cases of single segment matches in reserved expansion, where "%2F" will be
        # left encoded.
        #
        # The default behavior is to not decode RFC 6570 reserved characters in multi
        # segment matches.
  },
  "apis": [ # A list of API interfaces exported by this service. Only the `name` field
      # of the google.protobuf.Api needs to be provided by the configuration
      # author, as the remaining fields will be derived from the IDL during the
      # normalization process. It is an error to specify an API interface here
      # which cannot be resolved against the associated IDL files.
    { # Api is a light-weight descriptor for an API Interface.
        #
        # Interfaces are also described as "protocol buffer services" in some contexts,
        # such as by the "service" keyword in a .proto file, but they are different
        # from API Services, which represent a concrete implementation of an interface
        # as opposed to simply a description of methods and bindings. They are also
        # sometimes simply referred to as "APIs" in other contexts, such as the name of
        # this message itself. See https://cloud.google.com/apis/design/glossary for
        # detailed terminology.
      "methods": [ # The methods of this interface, in unspecified order.
        { # Method represents a method of an API interface.
          "name": "A String", # The simple name of this method.
          "requestStreaming": True or False, # If true, the request is streamed.
          "responseTypeUrl": "A String", # The URL of the output message type.
          "requestTypeUrl": "A String", # A URL of the input message type.
          "responseStreaming": True or False, # If true, the response is streamed.
          "syntax": "A String", # The source syntax of this method.
          "options": [ # Any metadata attached to the method.
            { # A protocol buffer option, which can be attached to a message, field,
                # enumeration, etc.
              "name": "A String", # The option's name. For protobuf built-in options (options defined in
                  # descriptor.proto), this is the short name. For example, `"map_entry"`.
                  # For custom options, it should be the fully-qualified name. For example,
                  # `"google.api.http"`.
              "value": { # The option's value packed in an Any message. If the value is a primitive,
                  # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                  # should be used. If the value is an enum, it should be stored as an int32
                  # value using the google.protobuf.Int32Value type.
                "a_key": "", # Properties of the object. Contains field @type with type URL.
              },
            },
          ],
        },
      ],
      "sourceContext": { # `SourceContext` represents information about the source of a # Source context for the protocol buffer service represented by this
          # message.
          # protobuf element, like the file in which it is defined.
        "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
            # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
      },
      "mixins": [ # Included interfaces. See Mixin.
        { # Declares an API Interface to be included in this interface. The including
            # interface must redeclare all the methods from the included interface, but
            # documentation and options are inherited as follows:
            #
            # - If after comment and whitespace stripping, the documentation
            #   string of the redeclared method is empty, it will be inherited
            #   from the original method.
            #
            # - Each annotation belonging to the service config (http,
            #   visibility) which is not set in the redeclared method will be
            #   inherited.
            #
            # - If an http annotation is inherited, the path pattern will be
            #   modified as follows. Any version prefix will be replaced by the
            #   version of the including interface plus the root path if
            #   specified.
            #
            # Example of a simple mixin:
            #
            #     package google.acl.v1;
            #     service AccessControl {
            #       // Get the underlying ACL object.
            #       rpc GetAcl(GetAclRequest) returns (Acl) {
            #         option (google.api.http).get = "/v1/{resource=**}:getAcl";
            #       }
            #     }
            #
            #     package google.storage.v2;
            #     service Storage {
            #       //       rpc GetAcl(GetAclRequest) returns (Acl);
            #
            #       // Get a data record.
            #       rpc GetData(GetDataRequest) returns (Data) {
            #         option (google.api.http).get = "/v2/{resource=**}";
            #       }
            #     }
            #
            # Example of a mixin configuration:
            #
            #     apis:
            #     - name: google.storage.v2.Storage
            #       mixins:
            #       - name: google.acl.v1.AccessControl
            #
            # The mixin construct implies that all methods in `AccessControl` are
            # also declared with same name and request/response types in
            # `Storage`. A documentation generator or annotation processor will
            # see the effective `Storage.GetAcl` method after inherting
            # documentation and annotations as follows:
            #
            #     service Storage {
            #       // Get the underlying ACL object.
            #       rpc GetAcl(GetAclRequest) returns (Acl) {
            #         option (google.api.http).get = "/v2/{resource=**}:getAcl";
            #       }
            #       ...
            #     }
            #
            # Note how the version in the path pattern changed from `v1` to `v2`.
            #
            # If the `root` field in the mixin is specified, it should be a
            # relative path under which inherited HTTP paths are placed. Example:
            #
            #     apis:
            #     - name: google.storage.v2.Storage
            #       mixins:
            #       - name: google.acl.v1.AccessControl
            #         root: acls
            #
            # This implies the following inherited HTTP annotation:
            #
            #     service Storage {
            #       // Get the underlying ACL object.
            #       rpc GetAcl(GetAclRequest) returns (Acl) {
            #         option (google.api.http).get = "/v2/acls/{resource=**}:getAcl";
            #       }
            #       ...
            #     }
          "root": "A String", # If non-empty specifies a path under which inherited HTTP paths
              # are rooted.
          "name": "A String", # The fully qualified name of the interface which is included.
        },
      ],
      "syntax": "A String", # The source syntax of the service.
      "version": "A String", # A version string for this interface. If specified, must have the form
          # `major-version.minor-version`, as in `1.10`. If the minor version is
          # omitted, it defaults to zero. If the entire version field is empty, the
          # major version is derived from the package name, as outlined below. If the
          # field is not empty, the version in the package name will be verified to be
          # consistent with what is provided here.
          #
          # The versioning schema uses [semantic
          # versioning](http://semver.org) where the major version number
          # indicates a breaking change and the minor version an additive,
          # non-breaking change. Both version numbers are signals to users
          # what to expect from different versions, and should be carefully
          # chosen based on the product plan.
          #
          # The major version is also reflected in the package name of the
          # interface, which must end in `v<major-version>`, as in
          # `google.feature.v1`. For major versions 0 and 1, the suffix can
          # be omitted. Zero major versions must only be used for
          # experimental, non-GA interfaces.
      "options": [ # Any metadata attached to the interface.
        { # A protocol buffer option, which can be attached to a message, field,
            # enumeration, etc.
          "name": "A String", # The option's name. For protobuf built-in options (options defined in
              # descriptor.proto), this is the short name. For example, `"map_entry"`.
              # For custom options, it should be the fully-qualified name. For example,
              # `"google.api.http"`.
          "value": { # The option's value packed in an Any message. If the value is a primitive,
              # the corresponding wrapper type defined in google/protobuf/wrappers.proto
              # should be used. If the value is an enum, it should be stored as an int32
              # value using the google.protobuf.Int32Value type.
            "a_key": "", # Properties of the object. Contains field @type with type URL.
          },
        },
      ],
      "name": "A String", # The fully qualified name of this interface, including package name
          # followed by the interface's simple name.
    },
  ],
  "customError": { # Customize service error responses.  For example, list any service # Custom error configuration.
      # specific protobuf types that can appear in error detail lists of
      # error responses.
      #
      # Example:
      #
      #     custom_error:
      #       types:
      #       - google.foo.v1.CustomError
      #       - google.foo.v1.AnotherError
    "rules": [ # The list of custom error rules that apply to individual API messages.
        #
        # **NOTE:** All service configuration rules follow "last one wins" order.
      { # A custom error rule.
        "isErrorType": True or False, # Mark this message as possible payload in error response.  Otherwise,
            # objects of this type will be filtered when they appear in error payload.
        "selector": "A String", # Selects messages to which this rule applies.
            #
            # Refer to selector for syntax details.
      },
    ],
    "types": [ # The list of custom error detail types, e.g. 'google.foo.v1.CustomError'.
      "A String",
    ],
  },
  "quota": { # Quota configuration helps to achieve fairness and budgeting in service # Quota configuration.
      # usage.
      #
      # The metric based quota configuration works this way:
      # - The service configuration defines a set of metrics.
      # - For API calls, the quota.metric_rules maps methods to metrics with
      #   corresponding costs.
      # - The quota.limits defines limits on the metrics, which will be used for
      #   quota checks at runtime.
      #
      # An example quota configuration in yaml format:
      #
      #    quota:
      #      limits:
      #
      #      - name: apiWriteQpsPerProject
      #        metric: library.googleapis.com/write_calls
      #        unit: "1/min/{project}"  # rate limit for consumer projects
      #        values:
      #          STANDARD: 10000
      #
      #
      #      # The metric rules bind all methods to the read_calls metric,
      #      # except for the UpdateBook and DeleteBook methods. These two methods
      #      # are mapped to the write_calls metric, with the UpdateBook method
      #      # consuming at twice rate as the DeleteBook method.
      #      metric_rules:
      #      - selector: "*"
      #        metric_costs:
      #          library.googleapis.com/read_calls: 1
      #      - selector: google.example.library.v1.LibraryService.UpdateBook
      #        metric_costs:
      #          library.googleapis.com/write_calls: 2
      #      - selector: google.example.library.v1.LibraryService.DeleteBook
      #        metric_costs:
      #          library.googleapis.com/write_calls: 1
      #
      #  Corresponding Metric definition:
      #
      #      metrics:
      #      - name: library.googleapis.com/read_calls
      #        display_name: Read requests
      #        metric_kind: DELTA
      #        value_type: INT64
      #
      #      - name: library.googleapis.com/write_calls
      #        display_name: Write requests
      #        metric_kind: DELTA
      #        value_type: INT64
      #
    "metricRules": [ # List of `MetricRule` definitions, each one mapping a selected method to one
        # or more metrics.
      { # Bind API methods to metrics. Binding a method to a metric causes that
          # metric's configured quota behaviors to apply to the method call.
        "metricCosts": { # Metrics to update when the selected methods are called, and the associated
            # cost applied to each metric.
            #
            # The key of the map is the metric name, and the values are the amount
            # increased for the metric against which the quota limits are defined.
            # The value must not be negative.
          "a_key": "A String",
        },
        "selector": "A String", # Selects the methods to which this rule applies.
            #
            # Refer to selector for syntax details.
      },
    ],
    "limits": [ # List of `QuotaLimit` definitions for the service.
      { # `QuotaLimit` defines a specific limit that applies over a specified duration
          # for a limit type. There can be at most one limit for a duration and limit
          # type combination defined within a `QuotaGroup`.
        "displayName": "A String", # User-visible display name for this limit.
            # Optional. If not set, the UI will provide a default display name based on
            # the quota configuration. This field can be used to override the default
            # display name generated from the configuration.
        "name": "A String", # Name of the quota limit.
            #
            # The name must be provided, and it must be unique within the service. The
            # name can only include alphanumeric characters as well as '-'.
            #
            # The maximum length of the limit name is 64 characters.
        "defaultLimit": "A String", # Default number of tokens that can be consumed during the specified
            # duration. This is the number of tokens assigned when a client
            # application developer activates the service for his/her project.
            #
            # Specifying a value of 0 will block all requests. This can be used if you
            # are provisioning quota to selected consumers and blocking others.
            # Similarly, a value of -1 will indicate an unlimited quota. No other
            # negative values are allowed.
            #
            # Used by group-based quotas only.
        "metric": "A String", # The name of the metric this quota limit applies to. The quota limits with
            # the same metric will be checked together during runtime. The metric must be
            # defined within the service config.
        "values": { # Tiered limit values. You must specify this as a key:value pair, with an
            # integer value that is the maximum number of requests allowed for the
            # specified unit. Currently only STANDARD is supported.
          "a_key": "A String",
        },
        "maxLimit": "A String", # Maximum number of tokens that can be consumed during the specified
            # duration. Client application developers can override the default limit up
            # to this maximum. If specified, this value cannot be set to a value less
            # than the default limit. If not specified, it is set to the default limit.
            #
            # To allow clients to apply overrides with no upper bound, set this to -1,
            # indicating unlimited maximum quota.
            #
            # Used by group-based quotas only.
        "duration": "A String", # Duration of this limit in textual notation. Example: "100s", "24h", "1d".
            # For duration longer than a day, only multiple of days is supported. We
            # support only "100s" and "1d" for now. Additional support will be added in
            # the future. "0" indicates indefinite duration.
            #
            # Used by group-based quotas only.
        "freeTier": "A String", # Free tier value displayed in the Developers Console for this limit.
            # The free tier is the number of tokens that will be subtracted from the
            # billed amount when billing is enabled.
            # This field can only be set on a limit with duration "1d", in a billable
            # group; it is invalid on any other limit. If this field is not set, it
            # defaults to 0, indicating that there is no free tier for this service.
            #
            # Used by group-based quotas only.
        "unit": "A String", # Specify the unit of the quota limit. It uses the same syntax as
            # Metric.unit. The supported unit kinds are determined by the quota
            # backend system.
            #
            # Here are some examples:
            # * "1/min/{project}" for quota per minute per project.
            #
            # Note: the order of unit components is insignificant.
            # The "1" at the beginning is required to follow the metric unit syntax.
        "description": "A String", # Optional. User-visible, extended description for this quota limit.
            # Should be used only when more context is needed to understand this limit
            # than provided by the limit's display name (see: `display_name`).
      },
    ],
  },
  "metrics": [ # Defines the metrics used by this service.
    { # Defines a metric type and its schema. Once a metric descriptor is created,
        # deleting or altering it stops data collection and makes the metric type's
        # existing data unusable.
      "description": "A String", # A detailed description of the metric, which can be used in documentation.
      "displayName": "A String", # A concise name for the metric, which can be displayed in user interfaces.
          # Use sentence case without an ending period, for example "Request count".
          # This field is optional but it is recommended to be set for any metrics
          # associated with user-visible concepts, such as Quota.
      "name": "A String", # The resource name of the metric descriptor.
      "metricKind": "A String", # Whether the metric records instantaneous values, changes to a value, etc.
          # Some combinations of `metric_kind` and `value_type` might not be supported.
      "valueType": "A String", # Whether the measurement is an integer, a floating-point number, etc.
          # Some combinations of `metric_kind` and `value_type` might not be supported.
      "labels": [ # The set of labels that can be used to describe a specific
          # instance of this metric type. For example, the
          # `appengine.googleapis.com/http/server/response_latencies` metric
          # type has a label for the HTTP response code, `response_code`, so
          # you can look at latencies for successful responses or just
          # for responses that failed.
        { # A description of a label.
          "valueType": "A String", # The type of data that can be assigned to the label.
          "description": "A String", # A human-readable description for the label.
          "key": "A String", # The label key.
        },
      ],
      "launchStage": "A String", # Optional. The launch stage of the metric definition.
      "type": "A String", # The metric type, including its DNS name prefix. The type is not
          # URL-encoded.  All user-defined metric types have the DNS name
          # `custom.googleapis.com` or `external.googleapis.com`.  Metric types should
          # use a natural hierarchical grouping. For example:
          #
          #     "custom.googleapis.com/invoice/paid/amount"
          #     "external.googleapis.com/prometheus/up"
          #     "appengine.googleapis.com/http/server/response_latencies"
      "unit": "A String", # The unit in which the metric value is reported. It is only applicable
          # if the `value_type` is `INT64`, `DOUBLE`, or `DISTRIBUTION`. The
          # supported units are a subset of [The Unified Code for Units of
          # Measure](http://unitsofmeasure.org/ucum.html) standard:
          #
          # **Basic units (UNIT)**
          #
          # * `bit`   bit
          # * `By`    byte
          # * `s`     second
          # * `min`   minute
          # * `h`     hour
          # * `d`     day
          #
          # **Prefixes (PREFIX)**
          #
          # * `k`     kilo    (10**3)
          # * `M`     mega    (10**6)
          # * `G`     giga    (10**9)
          # * `T`     tera    (10**12)
          # * `P`     peta    (10**15)
          # * `E`     exa     (10**18)
          # * `Z`     zetta   (10**21)
          # * `Y`     yotta   (10**24)
          # * `m`     milli   (10**-3)
          # * `u`     micro   (10**-6)
          # * `n`     nano    (10**-9)
          # * `p`     pico    (10**-12)
          # * `f`     femto   (10**-15)
          # * `a`     atto    (10**-18)
          # * `z`     zepto   (10**-21)
          # * `y`     yocto   (10**-24)
          # * `Ki`    kibi    (2**10)
          # * `Mi`    mebi    (2**20)
          # * `Gi`    gibi    (2**30)
          # * `Ti`    tebi    (2**40)
          #
          # **Grammar**
          #
          # The grammar also includes these connectors:
          #
          # * `/`    division (as an infix operator, e.g. `1/s`).
          # * `.`    multiplication (as an infix operator, e.g. `GBy.d`)
          #
          # The grammar for a unit is as follows:
          #
          #     Expression = Component { "." Component } { "/" Component } ;
          #
          #     Component = ( [ PREFIX ] UNIT | "%" ) [ Annotation ]
          #               | Annotation
          #               | "1"
          #               ;
          #
          #     Annotation = "{" NAME "}" ;
          #
          # Notes:
          #
          # * `Annotation` is just a comment if it follows a `UNIT` and is
          #    equivalent to `1` if it is used alone. For examples,
          #    `{requests}/s == 1/s`, `By{transmitted}/s == By/s`.
          # * `NAME` is a sequence of non-blank printable ASCII characters not
          #    containing '{' or '}'.
          # * `1` represents dimensionless value 1, such as in `1/s`.
          # * `%` represents dimensionless value 1/100, and annotates values giving
          #    a percentage.
      "metadata": { # Additional annotations that can be used to guide the usage of a metric. # Optional. Metadata which can be used to guide usage of the metric.
        "launchStage": "A String", # Deprecated. Please use the MetricDescriptor.launch_stage instead.
            # The launch stage of the metric definition.
        "ingestDelay": "A String", # The delay of data points caused by ingestion. Data points older than this
            # age are guaranteed to be ingested and available to be read, excluding
            # data loss due to errors.
        "samplePeriod": "A String", # The sampling period of metric data points. For metrics which are written
            # periodically, consecutive data points are stored at this time interval,
            # excluding data loss due to errors. Metrics with a higher granularity have
            # a smaller sampling period.
      },
    },
  ],
  "enums": [ # A list of all enum types included in this API service.  Enums
      # referenced directly or indirectly by the `apis` are automatically
      # included.  Enums which are not referenced but shall be included
      # should be listed here by name. Example:
      #
      #     enums:
      #     - name: google.someapi.v1.SomeEnum
    { # Enum type definition.
      "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
          # protobuf element, like the file in which it is defined.
        "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
            # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
      },
      "enumvalue": [ # Enum value definitions.
        { # Enum value definition.
          "options": [ # Protocol buffer options.
            { # A protocol buffer option, which can be attached to a message, field,
                # enumeration, etc.
              "name": "A String", # The option's name. For protobuf built-in options (options defined in
                  # descriptor.proto), this is the short name. For example, `"map_entry"`.
                  # For custom options, it should be the fully-qualified name. For example,
                  # `"google.api.http"`.
              "value": { # The option's value packed in an Any message. If the value is a primitive,
                  # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                  # should be used. If the value is an enum, it should be stored as an int32
                  # value using the google.protobuf.Int32Value type.
                "a_key": "", # Properties of the object. Contains field @type with type URL.
              },
            },
          ],
          "name": "A String", # Enum value name.
          "number": 42, # Enum value number.
        },
      ],
      "options": [ # Protocol buffer options.
        { # A protocol buffer option, which can be attached to a message, field,
            # enumeration, etc.
          "name": "A String", # The option's name. For protobuf built-in options (options defined in
              # descriptor.proto), this is the short name. For example, `"map_entry"`.
              # For custom options, it should be the fully-qualified name. For example,
              # `"google.api.http"`.
          "value": { # The option's value packed in an Any message. If the value is a primitive,
              # the corresponding wrapper type defined in google/protobuf/wrappers.proto
              # should be used. If the value is an enum, it should be stored as an int32
              # value using the google.protobuf.Int32Value type.
            "a_key": "", # Properties of the object. Contains field @type with type URL.
          },
        },
      ],
      "name": "A String", # Enum type name.
      "syntax": "A String", # The source syntax.
    },
  ],
  "types": [ # A list of all proto message types included in this API service.
      # Types referenced directly or indirectly by the `apis` are
      # automatically included.  Messages which are not referenced but
      # shall be included, such as types used by the `google.protobuf.Any` type,
      # should be listed here by name. Example:
      #
      #     types:
      #     - name: google.protobuf.Int32
    { # A protocol buffer message type.
      "oneofs": [ # The list of types appearing in `oneof` definitions in this type.
        "A String",
      ],
      "name": "A String", # The fully qualified message name.
      "fields": [ # The list of fields.
        { # A single field of a message type.
          "kind": "A String", # The field type.
          "oneofIndex": 42, # The index of the field type in `Type.oneofs`, for message or enumeration
              # types. The first type has index 1; zero means the type is not in the list.
          "typeUrl": "A String", # The field type URL, without the scheme, for message or enumeration
              # types. Example: `"type.googleapis.com/google.protobuf.Timestamp"`.
          "name": "A String", # The field name.
          "defaultValue": "A String", # The string value of the default value of this field. Proto2 syntax only.
          "jsonName": "A String", # The field JSON name.
          "number": 42, # The field number.
          "cardinality": "A String", # The field cardinality.
          "options": [ # The protocol buffer options.
            { # A protocol buffer option, which can be attached to a message, field,
                # enumeration, etc.
              "name": "A String", # The option's name. For protobuf built-in options (options defined in
                  # descriptor.proto), this is the short name. For example, `"map_entry"`.
                  # For custom options, it should be the fully-qualified name. For example,
                  # `"google.api.http"`.
              "value": { # The option's value packed in an Any message. If the value is a primitive,
                  # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                  # should be used. If the value is an enum, it should be stored as an int32
                  # value using the google.protobuf.Int32Value type.
                "a_key": "", # Properties of the object. Contains field @type with type URL.
              },
            },
          ],
          "packed": True or False, # Whether to use alternative packed wire representation.
        },
      ],
      "syntax": "A String", # The source syntax.
      "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
          # protobuf element, like the file in which it is defined.
        "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
            # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
      },
      "options": [ # The protocol buffer options.
        { # A protocol buffer option, which can be attached to a message, field,
            # enumeration, etc.
          "name": "A String", # The option's name. For protobuf built-in options (options defined in
              # descriptor.proto), this is the short name. For example, `"map_entry"`.
              # For custom options, it should be the fully-qualified name. For example,
              # `"google.api.http"`.
          "value": { # The option's value packed in an Any message. If the value is a primitive,
              # the corresponding wrapper type defined in google/protobuf/wrappers.proto
              # should be used. If the value is an enum, it should be stored as an int32
              # value using the google.protobuf.Int32Value type.
            "a_key": "", # Properties of the object. Contains field @type with type URL.
          },
        },
      ],
    },
  ],
  "logging": { # Logging configuration of the service. # Logging configuration.
      #
      # The following example shows how to configure logs to be sent to the
      # producer and consumer projects. In the example, the `activity_history`
      # log is sent to both the producer and consumer projects, whereas the
      # `purchase_history` log is only sent to the producer project.
      #
      #     monitored_resources:
      #     - type: library.googleapis.com/branch
      #       labels:
      #       - key: /city
      #         description: The city where the library branch is located in.
      #       - key: /name
      #         description: The name of the branch.
      #     logs:
      #     - name: activity_history
      #       labels:
      #       - key: /customer_id
      #     - name: purchase_history
      #     logging:
      #       producer_destinations:
      #       - monitored_resource: library.googleapis.com/branch
      #         logs:
      #         - activity_history
      #         - purchase_history
      #       consumer_destinations:
      #       - monitored_resource: library.googleapis.com/branch
      #         logs:
      #         - activity_history
    "producerDestinations": [ # Logging configurations for sending logs to the producer project.
        # There can be multiple producer destinations, each one must have a
        # different monitored resource type. A log can be used in at most
        # one producer destination.
      { # Configuration of a specific logging destination (the producer project
          # or the consumer project).
        "monitoredResource": "A String", # The monitored resource type. The type must be defined in the
            # Service.monitored_resources section.
        "logs": [ # Names of the logs to be sent to this destination. Each name must
            # be defined in the Service.logs section. If the log name is
            # not a domain scoped name, it will be automatically prefixed with
            # the service name followed by "/".
          "A String",
        ],
      },
    ],
    "consumerDestinations": [ # Logging configurations for sending logs to the consumer project.
        # There can be multiple consumer destinations, each one must have a
        # different monitored resource type. A log can be used in at most
        # one consumer destination.
      { # Configuration of a specific logging destination (the producer project
          # or the consumer project).
        "monitoredResource": "A String", # The monitored resource type. The type must be defined in the
            # Service.monitored_resources section.
        "logs": [ # Names of the logs to be sent to this destination. Each name must
            # be defined in the Service.logs section. If the log name is
            # not a domain scoped name, it will be automatically prefixed with
            # the service name followed by "/".
          "A String",
        ],
      },
    ],
  },
  "name": "A String", # The service name, which is a DNS-like logical identifier for the
      # service, such as `calendar.googleapis.com`. The service name
      # typically goes through DNS verification to make sure the owner
      # of the service also owns the DNS name.
  "documentation": { # `Documentation` provides the information for describing a service. # Additional API documentation.
      #
      # Example:
      # <pre><code>documentation:
      #   summary: >
      #     The Google Calendar API gives access
      #     to most calendar features.
      #   pages:
      #   - name: Overview
      #     content: &#40;== include google/foo/overview.md ==&#41;
      #   - name: Tutorial
      #     content: &#40;== include google/foo/tutorial.md ==&#41;
      #     subpages;
      #     - name: Java
      #       content: &#40;== include google/foo/tutorial_java.md ==&#41;
      #   rules:
      #   - selector: google.calendar.Calendar.Get
      #     description: >
      #       ...
      #   - selector: google.calendar.Calendar.Put
      #     description: >
      #       ...
      # </code></pre>
      # Documentation is provided in markdown syntax. In addition to
      # standard markdown features, definition lists, tables and fenced
      # code blocks are supported. Section headers can be provided and are
      # interpreted relative to the section nesting of the context where
      # a documentation fragment is embedded.
      #
      # Documentation from the IDL is merged with documentation defined
      # via the config at normalization time, where documentation provided
      # by config rules overrides IDL provided.
      #
      # A number of constructs specific to the API platform are supported
      # in documentation text.
      #
      # In order to reference a proto element, the following
      # notation can be used:
      # <pre><code>&#91;fully.qualified.proto.name]&#91;]</code></pre>
      # To override the display text used for the link, this can be used:
      # <pre><code>&#91;display text]&#91;fully.qualified.proto.name]</code></pre>
      # Text can be excluded from doc using the following notation:
      # <pre><code>&#40;-- internal comment --&#41;</code></pre>
      #
      # A few directives are available in documentation. Note that
      # directives must appear on a single line to be properly
      # identified. The `include` directive includes a markdown file from
      # an external source:
      # <pre><code>&#40;== include path/to/file ==&#41;</code></pre>
      # The `resource_for` directive marks a message to be the resource of
      # a collection in REST view. If it is not specified, tools attempt
      # to infer the resource from the operations in a collection:
      # <pre><code>&#40;== resource_for v1.shelves.books ==&#41;</code></pre>
      # The directive `suppress_warning` does not directly affect documentation
      # and is documented together with service config validation.
    "rules": [ # A list of documentation rules that apply to individual API elements.
        #
        # **NOTE:** All service configuration rules follow "last one wins" order.
      { # A documentation rule provides information about individual API elements.
        "description": "A String", # Description of the selected API(s).
        "deprecationDescription": "A String", # Deprecation description of the selected element(s). It can be provided if
            # an element is marked as `deprecated`.
        "selector": "A String", # The selector is a comma-separated list of patterns. Each pattern is a
            # qualified name of the element which may end in "*", indicating a wildcard.
            # Wildcards are only allowed at the end and for a whole component of the
            # qualified name, i.e. "foo.*" is ok, but not "foo.b*" or "foo.*.bar". A
            # wildcard will match one or more components. To specify a default for all
            # applicable elements, the whole pattern "*" is used.
      },
    ],
    "documentationRootUrl": "A String", # The URL to the root of documentation.
    "overview": "A String", # Declares a single overview page. For example:
        # <pre><code>documentation:
        #   summary: ...
        #   overview: &#40;== include overview.md ==&#41;
        # </code></pre>
        # This is a shortcut for the following declaration (using pages style):
        # <pre><code>documentation:
        #   summary: ...
        #   pages:
        #   - name: Overview
        #     content: &#40;== include overview.md ==&#41;
        # </code></pre>
        # Note: you cannot specify both `overview` field and `pages` field.
    "pages": [ # The top level pages for the documentation set.
      { # Represents a documentation page. A page can contain subpages to represent
          # nested documentation set structure.
        "content": "A String", # The Markdown content of the page. You can use <code>&#40;== include {path}
            # ==&#41;</code> to include content from a Markdown file.
        "subpages": [ # Subpages of this page. The order of subpages specified here will be
            # honored in the generated docset.
          # Object with schema name: Page
        ],
        "name": "A String", # The name of the page. It will be used as an identity of the page to
            # generate URI of the page, text of the link to this page in navigation,
            # etc. The full page name (start from the root page name to this page
            # concatenated with `.`) can be used as reference to the page in your
            # documentation. For example:
            # <pre><code>pages:
            # - name: Tutorial
            #   content: &#40;== include tutorial.md ==&#41;
            #   subpages:
            #   - name: Java
            #     content: &#40;== include tutorial_java.md ==&#41;
            # </code></pre>
            # You can reference `Java` page using Markdown reference link syntax:
            # `Java`.
      },
    ],
    "summary": "A String", # A short summary of what the service does. Can only be provided by
        # plain text.
  },
  "sourceInfo": { # Source information used to create a Service Config # Output only. The source information for this configuration if available.
    "sourceFiles": [ # All files used during config generation.
      {
        "a_key": "", # Properties of the object. Contains field @type with type URL.
      },
    ],
  },
  "systemTypes": [ # A list of all proto message types included in this API service.
      # It serves similar purpose as [google.api.Service.types], except that
      # these types are not needed by user-defined APIs. Therefore, they will not
      # show up in the generated discovery doc. This field should only be used
      # to define system APIs in ESF.
    { # A protocol buffer message type.
      "oneofs": [ # The list of types appearing in `oneof` definitions in this type.
        "A String",
      ],
      "name": "A String", # The fully qualified message name.
      "fields": [ # The list of fields.
        { # A single field of a message type.
          "kind": "A String", # The field type.
          "oneofIndex": 42, # The index of the field type in `Type.oneofs`, for message or enumeration
              # types. The first type has index 1; zero means the type is not in the list.
          "typeUrl": "A String", # The field type URL, without the scheme, for message or enumeration
              # types. Example: `"type.googleapis.com/google.protobuf.Timestamp"`.
          "name": "A String", # The field name.
          "defaultValue": "A String", # The string value of the default value of this field. Proto2 syntax only.
          "jsonName": "A String", # The field JSON name.
          "number": 42, # The field number.
          "cardinality": "A String", # The field cardinality.
          "options": [ # The protocol buffer options.
            { # A protocol buffer option, which can be attached to a message, field,
                # enumeration, etc.
              "name": "A String", # The option's name. For protobuf built-in options (options defined in
                  # descriptor.proto), this is the short name. For example, `"map_entry"`.
                  # For custom options, it should be the fully-qualified name. For example,
                  # `"google.api.http"`.
              "value": { # The option's value packed in an Any message. If the value is a primitive,
                  # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                  # should be used. If the value is an enum, it should be stored as an int32
                  # value using the google.protobuf.Int32Value type.
                "a_key": "", # Properties of the object. Contains field @type with type URL.
              },
            },
          ],
          "packed": True or False, # Whether to use alternative packed wire representation.
        },
      ],
      "syntax": "A String", # The source syntax.
      "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
          # protobuf element, like the file in which it is defined.
        "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
            # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
      },
      "options": [ # The protocol buffer options.
        { # A protocol buffer option, which can be attached to a message, field,
            # enumeration, etc.
          "name": "A String", # The option's name. For protobuf built-in options (options defined in
              # descriptor.proto), this is the short name. For example, `"map_entry"`.
              # For custom options, it should be the fully-qualified name. For example,
              # `"google.api.http"`.
          "value": { # The option's value packed in an Any message. If the value is a primitive,
              # the corresponding wrapper type defined in google/protobuf/wrappers.proto
              # should be used. If the value is an enum, it should be stored as an int32
              # value using the google.protobuf.Int32Value type.
            "a_key": "", # Properties of the object. Contains field @type with type URL.
          },
        },
      ],
    },
  ],
  "context": { # `Context` defines which contexts an API requests. # Context configuration.
      #
      # Example:
      #
      #     context:
      #       rules:
      #       - selector: "*"
      #         requested:
      #         - google.rpc.context.ProjectContext
      #         - google.rpc.context.OriginContext
      #
      # The above specifies that all methods in the API request
      # `google.rpc.context.ProjectContext` and
      # `google.rpc.context.OriginContext`.
      #
      # Available context types are defined in package
      # `google.rpc.context`.
      #
      # This also provides mechanism to whitelist any protobuf message extension that
      # can be sent in grpc metadata using “x-goog-ext-<extension_id>-bin” and
      # “x-goog-ext-<extension_id>-jspb” format. For example, list any service
      # specific protobuf types that can appear in grpc metadata as follows in your
      # yaml file:
      #
      # Example:
      #
      #     context:
      #       rules:
      #        - selector: "google.example.library.v1.LibraryService.CreateBook"
      #          allowed_request_extensions:
      #          - google.foo.v1.NewExtension
      #          allowed_response_extensions:
      #          - google.foo.v1.NewExtension
      #
      # You can also specify extension ID instead of fully qualified extension name
      # here.
    "rules": [ # A list of RPC context rules that apply to individual API methods.
        #
        # **NOTE:** All service configuration rules follow "last one wins" order.
      { # A context rule provides information about the context for an individual API
          # element.
        "provided": [ # A list of full type names of provided contexts.
          "A String",
        ],
        "allowedResponseExtensions": [ # A list of full type names or extension IDs of extensions allowed in grpc
            # side channel from backend to client.
          "A String",
        ],
        "selector": "A String", # Selects the methods to which this rule applies.
            #
            # Refer to selector for syntax details.
        "allowedRequestExtensions": [ # A list of full type names or extension IDs of extensions allowed in grpc
            # side channel from client to backend.
          "A String",
        ],
        "requested": [ # A list of full type names of requested contexts.
          "A String",
        ],
      },
    ],
  },
  "endpoints": [ # Configuration for network endpoints.  If this is empty, then an endpoint
      # with the same name as the service is automatically generated to service all
      # defined APIs.
    { # `Endpoint` describes a network endpoint that serves a set of APIs.
        # A service may expose any number of endpoints, and all endpoints share the
        # same service configuration, such as quota configuration and monitoring
        # configuration.
        #
        # Example service configuration:
        #
        #     name: library-example.googleapis.com
        #     endpoints:
        #       # Below entry makes 'google.example.library.v1.Library'
        #       # API be served from endpoint address library-example.googleapis.com.
        #       # It also allows HTTP OPTIONS calls to be passed to the backend, for
        #       # it to decide whether the subsequent cross-origin request is
        #       # allowed to proceed.
        #     - name: library-example.googleapis.com
        #       allow_cors: true
      "allowCors": True or False, # Allowing
          # [CORS](https://en.wikipedia.org/wiki/Cross-origin_resource_sharing), aka
          # cross-domain traffic, would allow the backends served from this endpoint to
          # receive and respond to HTTP OPTIONS requests. The response will be used by
          # the browser to determine whether the subsequent cross-origin request is
          # allowed to proceed.
      "target": "A String", # The specification of an Internet routable address of API frontend that will
          # handle requests to this [API
          # Endpoint](https://cloud.google.com/apis/design/glossary). It should be
          # either a valid IPv4 address or a fully-qualified domain name. For example,
          # "8.8.8.8" or "myservice.appspot.com".
      "features": [ # The list of features enabled on this endpoint.
        "A String",
      ],
      "name": "A String", # The canonical name of this endpoint.
      "aliases": [ # DEPRECATED: This field is no longer supported. Instead of using aliases,
          # please specify multiple google.api.Endpoint for each of the intended
          # aliases.
          #
          # Additional names that this endpoint will be hosted on.
        "A String",
      ],
    },
  ],
}

  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # `Service` is the root object of Google service configuration schema. It
      # describes basic information about a service, such as the name and the
      # title, and delegates other aspects to sub-sections. Each sub-section is
      # either a proto message or a repeated proto message that configures a
      # specific aspect, such as auth. See each proto message definition for details.
      #
      # Example:
      #
      #     type: google.api.Service
      #     config_version: 3
      #     name: calendar.googleapis.com
      #     title: Google Calendar API
      #     apis:
      #     - name: google.calendar.v3.Calendar
      #     authentication:
      #       providers:
      #       - id: google_calendar_auth
      #         jwks_uri: https://www.googleapis.com/oauth2/v1/certs
      #         issuer: https://securetoken.google.com
      #       rules:
      #       - selector: "*"
      #         requirements:
      #           provider_id: google_calendar_auth
    "control": { # Selects and configures the service controller used by the service.  The # Configuration for the service control plane.
        # service controller handles features like abuse, quota, billing, logging,
        # monitoring, etc.
      "environment": "A String", # The service control environment to use. If empty, no control plane
          # feature (like quota and billing) will be enabled.
    },
    "monitoredResources": [ # Defines the monitored resources used by this service. This is required
        # by the Service.monitoring and Service.logging configurations.
      { # An object that describes the schema of a MonitoredResource object using a
          # type name and a set of labels.  For example, the monitored resource
          # descriptor for Google Compute Engine VM instances has a type of
          # `"gce_instance"` and specifies the use of the labels `"instance_id"` and
          # `"zone"` to identify particular VM instances.
          #
          # Different APIs can support different monitored resource types. APIs generally
          # provide a `list` method that returns the monitored resource descriptors used
          # by the API.
          #
          # Next ID: 10
        "displayName": "A String", # Optional. A concise name for the monitored resource type that might be
            # displayed in user interfaces. It should be a Title Cased Noun Phrase,
            # without any article or other determiners. For example,
            # `"Google Cloud SQL Database"`.
        "name": "A String", # Optional. The resource name of the monitored resource descriptor:
            # `"projects/{project_id}/monitoredResourceDescriptors/{type}"` where
            # {type} is the value of the `type` field in this object and
            # {project_id} is a project ID that provides API-specific context for
            # accessing the type.  APIs that do not use project information can use the
            # resource name format `"monitoredResourceDescriptors/{type}"`.
        "labels": [ # Required. A set of labels used to describe instances of this monitored
            # resource type. For example, an individual Google Cloud SQL database is
            # identified by values for the labels `"database_id"` and `"zone"`.
          { # A description of a label.
            "valueType": "A String", # The type of data that can be assigned to the label.
            "description": "A String", # A human-readable description for the label.
            "key": "A String", # The label key.
          },
        ],
        "launchStage": "A String", # Optional. The launch stage of the monitored resource definition.
        "type": "A String", # Required. The monitored resource type. For example, the type
            # `"cloudsql_database"` represents databases in Google Cloud SQL.
            # The maximum length of this value is 256 characters.
        "description": "A String", # Optional. A detailed description of the monitored resource type that might
            # be used in documentation.
      },
    ],
    "logs": [ # Defines the logs used by this service.
      { # A description of a log type. Example in YAML format:
          #
          #     - name: library.googleapis.com/activity_history
          #       description: The history of borrowing and returning library items.
          #       display_name: Activity
          #       labels:
          #       - key: /customer_id
          #         description: Identifier of a library customer
        "labels": [ # The set of labels that are available to describe a specific log entry.
            # Runtime requests that contain labels not specified here are
            # considered invalid.
          { # A description of a label.
            "valueType": "A String", # The type of data that can be assigned to the label.
            "description": "A String", # A human-readable description for the label.
            "key": "A String", # The label key.
          },
        ],
        "displayName": "A String", # The human-readable name for this log. This information appears on
            # the user interface and should be concise.
        "name": "A String", # The name of the log. It must be less than 512 characters long and can
            # include the following characters: upper- and lower-case alphanumeric
            # characters [A-Za-z0-9], and punctuation characters including
            # slash, underscore, hyphen, period [/_-.].
        "description": "A String", # A human-readable description of this log. This information appears in
            # the documentation and can contain details.
      },
    ],
    "systemParameters": { # ### System parameter configuration # System parameter configuration.
        #
        # A system parameter is a special kind of parameter defined by the API
        # system, not by an individual API. It is typically mapped to an HTTP header
        # and/or a URL query parameter. This configuration specifies which methods
        # change the names of the system parameters.
      "rules": [ # Define system parameters.
          #
          # The parameters defined here will override the default parameters
          # implemented by the system. If this field is missing from the service
          # config, default system parameters will be used. Default system parameters
          # and names is implementation-dependent.
          #
          # Example: define api key for all methods
          #
          #     system_parameters
          #       rules:
          #         - selector: "*"
          #           parameters:
          #             - name: api_key
          #               url_query_parameter: api_key
          #
          #
          # Example: define 2 api key names for a specific method.
          #
          #     system_parameters
          #       rules:
          #         - selector: "/ListShelves"
          #           parameters:
          #             - name: api_key
          #               http_header: Api-Key1
          #             - name: api_key
          #               http_header: Api-Key2
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # Define a system parameter rule mapping system parameter definitions to
            # methods.
          "parameters": [ # Define parameters. Multiple names may be defined for a parameter.
              # For a given method call, only one of them should be used. If multiple
              # names are used the behavior is implementation-dependent.
              # If none of the specified names are present the behavior is
              # parameter-dependent.
            { # Define a parameter's name and location. The parameter may be passed as either
                # an HTTP header or a URL query parameter, and if both are passed the behavior
                # is implementation-dependent.
              "urlQueryParameter": "A String", # Define the URL query parameter name to use for the parameter. It is case
                  # sensitive.
              "httpHeader": "A String", # Define the HTTP header name to use for the parameter. It is case
                  # insensitive.
              "name": "A String", # Define the name of the parameter, such as "api_key" . It is case sensitive.
            },
          ],
          "selector": "A String", # Selects the methods to which this rule applies. Use '*' to indicate all
              # methods in all APIs.
              #
              # Refer to selector for syntax details.
        },
      ],
    },
    "id": "A String", # A unique ID for a specific instance of this message, typically assigned
        # by the client for tracking purpose. If empty, the server may choose to
        # generate one instead. Must be no longer than 60 characters.
    "backend": { # `Backend` defines the backend configuration for a service. # API backend configuration.
      "rules": [ # A list of API backend rules that apply to individual API methods.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # A backend rule provides configuration for an individual API element.
          "jwtAudience": "A String", # The JWT audience is used when generating a JWT id token for the backend.
          "pathTranslation": "A String",
          "minDeadline": 3.14, # Minimum deadline in seconds needed for this method. Calls having deadline
              # value lower than this will be rejected.
          "selector": "A String", # Selects the methods to which this rule applies.
              #
              # Refer to selector for syntax details.
          "operationDeadline": 3.14, # The number of seconds to wait for the completion of a long running
              # operation. The default is no deadline.
          "deadline": 3.14, # The number of seconds to wait for a response from a request.  The default
              # deadline for gRPC is infinite (no deadline) and HTTP requests is 5 seconds.
          "address": "A String", # The address of the API backend.
        },
      ],
    },
    "monitoring": { # Monitoring configuration of the service. # Monitoring configuration.
        #
        # The example below shows how to configure monitored resources and metrics
        # for monitoring. In the example, a monitored resource and two metrics are
        # defined. The `library.googleapis.com/book/returned_count` metric is sent
        # to both producer and consumer projects, whereas the
        # `library.googleapis.com/book/overdue_count` metric is only sent to the
        # consumer project.
        #
        #     monitored_resources:
        #     - type: library.googleapis.com/branch
        #       labels:
        #       - key: /city
        #         description: The city where the library branch is located in.
        #       - key: /name
        #         description: The name of the branch.
        #     metrics:
        #     - name: library.googleapis.com/book/returned_count
        #       metric_kind: DELTA
        #       value_type: INT64
        #       labels:
        #       - key: /customer_id
        #     - name: library.googleapis.com/book/overdue_count
        #       metric_kind: GAUGE
        #       value_type: INT64
        #       labels:
        #       - key: /customer_id
        #     monitoring:
        #       producer_destinations:
        #       - monitored_resource: library.googleapis.com/branch
        #         metrics:
        #         - library.googleapis.com/book/returned_count
        #       consumer_destinations:
        #       - monitored_resource: library.googleapis.com/branch
        #         metrics:
        #         - library.googleapis.com/book/returned_count
        #         - library.googleapis.com/book/overdue_count
      "producerDestinations": [ # Monitoring configurations for sending metrics to the producer project.
          # There can be multiple producer destinations. A monitored resouce type may
          # appear in multiple monitoring destinations if different aggregations are
          # needed for different sets of metrics associated with that monitored
          # resource type. A monitored resource and metric pair may only be used once
          # in the Monitoring configuration.
        { # Configuration of a specific monitoring destination (the producer project
            # or the consumer project).
          "monitoredResource": "A String", # The monitored resource type. The type must be defined in
              # Service.monitored_resources section.
          "metrics": [ # Types of the metrics to report to this monitoring destination.
              # Each type must be defined in Service.metrics section.
            "A String",
          ],
        },
      ],
      "consumerDestinations": [ # Monitoring configurations for sending metrics to the consumer project.
          # There can be multiple consumer destinations. A monitored resouce type may
          # appear in multiple monitoring destinations if different aggregations are
          # needed for different sets of metrics associated with that monitored
          # resource type. A monitored resource and metric pair may only be used once
          # in the Monitoring configuration.
        { # Configuration of a specific monitoring destination (the producer project
            # or the consumer project).
          "monitoredResource": "A String", # The monitored resource type. The type must be defined in
              # Service.monitored_resources section.
          "metrics": [ # Types of the metrics to report to this monitoring destination.
              # Each type must be defined in Service.metrics section.
            "A String",
          ],
        },
      ],
    },
    "billing": { # Billing related configuration of the service. # Billing configuration.
        #
        # The following example shows how to configure monitored resources and metrics
        # for billing:
        #
        #     monitored_resources:
        #     - type: library.googleapis.com/branch
        #       labels:
        #       - key: /city
        #         description: The city where the library branch is located in.
        #       - key: /name
        #         description: The name of the branch.
        #     metrics:
        #     - name: library.googleapis.com/book/borrowed_count
        #       metric_kind: DELTA
        #       value_type: INT64
        #     billing:
        #       consumer_destinations:
        #       - monitored_resource: library.googleapis.com/branch
        #         metrics:
        #         - library.googleapis.com/book/borrowed_count
      "consumerDestinations": [ # Billing configurations for sending metrics to the consumer project.
          # There can be multiple consumer destinations per service, each one must have
          # a different monitored resource type. A metric can be used in at most
          # one consumer destination.
        { # Configuration of a specific billing destination (Currently only support
            # bill against consumer project).
          "monitoredResource": "A String", # The monitored resource type. The type must be defined in
              # Service.monitored_resources section.
          "metrics": [ # Names of the metrics to report to this billing destination.
              # Each name must be defined in Service.metrics section.
            "A String",
          ],
        },
      ],
    },
    "title": "A String", # The product title for this service.
    "authentication": { # `Authentication` defines the authentication configuration for an API. # Auth configuration.
        #
        # Example for an API targeted for external use:
        #
        #     name: calendar.googleapis.com
        #     authentication:
        #       providers:
        #       - id: google_calendar_auth
        #         jwks_uri: https://www.googleapis.com/oauth2/v1/certs
        #         issuer: https://securetoken.google.com
        #       rules:
        #       - selector: "*"
        #         requirements:
        #           provider_id: google_calendar_auth
      "rules": [ # A list of authentication rules that apply to individual API methods.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # Authentication rules for the service.
            #
            # By default, if a method has any authentication requirements, every request
            # must include a valid credential matching one of the requirements.
            # It's an error to include more than one kind of credential in a single
            # request.
            #
            # If a method doesn't have any auth requirements, request credentials will be
            # ignored.
          "oauth": { # OAuth scopes are a way to define data and permissions on data. For example, # The requirements for OAuth credentials.
              # there are scopes defined for "Read-only access to Google Calendar" and
              # "Access to Cloud Platform". Users can consent to a scope for an application,
              # giving it permission to access that data on their behalf.
              #
              # OAuth scope specifications should be fairly coarse grained; a user will need
              # to see and understand the text description of what your scope means.
              #
              # In most cases: use one or at most two OAuth scopes for an entire family of
              # products. If your product has multiple APIs, you should probably be sharing
              # the OAuth scope across all of those APIs.
              #
              # When you need finer grained OAuth consent screens: talk with your product
              # management about how developers will use them in practice.
              #
              # Please note that even though each of the canonical scopes is enough for a
              # request to be accepted and passed to the backend, a request can still fail
              # due to the backend requiring additional scopes or permissions.
            "canonicalScopes": "A String", # The list of publicly documented OAuth scopes that are allowed access. An
                # OAuth token containing any of these scopes will be accepted.
                #
                # Example:
                #
                #      canonical_scopes: https://www.googleapis.com/auth/calendar,
                #                        https://www.googleapis.com/auth/calendar.read
          },
          "allowWithoutCredential": True or False, # If true, the service accepts API keys without any other credential.
          "requirements": [ # Requirements for additional authentication providers.
            { # User-defined authentication requirements, including support for
                # [JSON Web Token
                # (JWT)](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32).
              "providerId": "A String", # id from authentication provider.
                  #
                  # Example:
                  #
                  #     provider_id: bookstore_auth
              "audiences": "A String", # NOTE: This will be deprecated soon, once AuthProvider.audiences is
                  # implemented and accepted in all the runtime components.
                  #
                  # The list of JWT
                  # [audiences](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.3).
                  # that are allowed to access. A JWT containing any of these audiences will
                  # be accepted. When this setting is absent, only JWTs with audience
                  # "https://Service_name/API_name"
                  # will be accepted. For example, if no audiences are in the setting,
                  # LibraryService API will only accept JWTs with the following audience
                  # "https://library-example.googleapis.com/google.example.library.v1.LibraryService".
                  #
                  # Example:
                  #
                  #     audiences: bookstore_android.apps.googleusercontent.com,
                  #                bookstore_web.apps.googleusercontent.com
            },
          ],
          "selector": "A String", # Selects the methods to which this rule applies.
              #
              # Refer to selector for syntax details.
        },
      ],
      "providers": [ # Defines a set of authentication providers that a service supports.
        { # Configuration for an authentication provider, including support for
            # [JSON Web Token
            # (JWT)](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32).
          "jwksUri": "A String", # URL of the provider's public key set to validate signature of the JWT. See
              # [OpenID
              # Discovery](https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderMetadata).
              # Optional if the key set document:
              #  - can be retrieved from
              #    [OpenID
              #    Discovery](https://openid.net/specs/openid-connect-discovery-1_0.html of
              #    the issuer.
              #  - can be inferred from the email domain of the issuer (e.g. a Google
              #  service account).
              #
              # Example: https://www.googleapis.com/oauth2/v1/certs
          "audiences": "A String", # The list of JWT
              # [audiences](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.3).
              # that are allowed to access. A JWT containing any of these audiences will
              # be accepted. When this setting is absent, only JWTs with audience
              # "https://Service_name/API_name"
              # will be accepted. For example, if no audiences are in the setting,
              # LibraryService API will only accept JWTs with the following audience
              # "https://library-example.googleapis.com/google.example.library.v1.LibraryService".
              #
              # Example:
              #
              #     audiences: bookstore_android.apps.googleusercontent.com,
              #                bookstore_web.apps.googleusercontent.com
          "id": "A String", # The unique identifier of the auth provider. It will be referred to by
              # `AuthRequirement.provider_id`.
              #
              # Example: "bookstore_auth".
          "authorizationUrl": "A String", # Redirect URL if JWT token is required but not present or is expired.
              # Implement authorizationUrl of securityDefinitions in OpenAPI spec.
          "issuer": "A String", # Identifies the principal that issued the JWT. See
              # https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.1
              # Usually a URL or an email address.
              #
              # Example: https://securetoken.google.com
              # Example: 1234567-compute@developer.gserviceaccount.com
        },
      ],
    },
    "usage": { # Configuration controlling usage of a service. # Configuration controlling usage of this service.
      "rules": [ # A list of usage rules that apply to individual API methods.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # Usage configuration rules for the service.
            #
            # NOTE: Under development.
            #
            #
            # Use this rule to configure unregistered calls for the service. Unregistered
            # calls are calls that do not contain consumer project identity.
            # (Example: calls that do not contain an API key).
            # By default, API methods do not allow unregistered calls, and each method call
            # must be identified by a consumer project identity. Use this rule to
            # allow/disallow unregistered calls.
            #
            # Example of an API that wants to allow unregistered calls for entire service.
            #
            #     usage:
            #       rules:
            #       - selector: "*"
            #         allow_unregistered_calls: true
            #
            # Example of a method that wants to allow unregistered calls.
            #
            #     usage:
            #       rules:
            #       - selector: "google.example.library.v1.LibraryService.CreateBook"
            #         allow_unregistered_calls: true
          "skipServiceControl": True or False, # If true, the selected method should skip service control and the control
              # plane features, such as quota and billing, will not be available.
              # This flag is used by Google Cloud Endpoints to bypass checks for internal
              # methods, such as service health check methods.
          "allowUnregisteredCalls": True or False, # If true, the selected method allows unregistered calls, e.g. calls
              # that don't identify any user or application.
          "selector": "A String", # Selects the methods to which this rule applies. Use '*' to indicate all
              # methods in all APIs.
              #
              # Refer to selector for syntax details.
        },
      ],
      "producerNotificationChannel": "A String", # The full resource name of a channel used for sending notifications to the
          # service producer.
          #
          # Google Service Management currently only supports
          # [Google Cloud Pub/Sub](https://cloud.google.com/pubsub) as a notification
          # channel. To use Google Cloud Pub/Sub as the channel, this must be the name
          # of a Cloud Pub/Sub topic that uses the Cloud Pub/Sub topic name format
          # documented in https://cloud.google.com/pubsub/docs/overview.
      "requirements": [ # Requirements that must be satisfied before a consumer project can use the
          # service. Each requirement is of the form <service.name>/<requirement-id>;
          # for example 'serviceusage.googleapis.com/billing-enabled'.
        "A String",
      ],
    },
    "configVersion": 42, # The semantic version of the service configuration. The config version
        # affects the interpretation of the service configuration. For example,
        # certain features are enabled by default for certain config versions.
        # The latest config version is `3`.
    "producerProjectId": "A String", # The Google project that owns this service.
    "http": { # Defines the HTTP configuration for an API service. It contains a list of # HTTP configuration.
        # HttpRule, each specifying the mapping of an RPC method
        # to one or more HTTP REST API methods.
      "rules": [ # A list of HTTP configuration rules that apply to individual API methods.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # # gRPC Transcoding
            #
            # gRPC Transcoding is a feature for mapping between a gRPC method and one or
            # more HTTP REST endpoints. It allows developers to build a single API service
            # that supports both gRPC APIs and REST APIs. Many systems, including [Google
            # APIs](https://github.com/googleapis/googleapis),
            # [Cloud Endpoints](https://cloud.google.com/endpoints), [gRPC
            # Gateway](https://github.com/grpc-ecosystem/grpc-gateway),
            # and [Envoy](https://github.com/envoyproxy/envoy) proxy support this feature
            # and use it for large scale production services.
            #
            # `HttpRule` defines the schema of the gRPC/REST mapping. The mapping specifies
            # how different portions of the gRPC request message are mapped to the URL
            # path, URL query parameters, and HTTP request body. It also controls how the
            # gRPC response message is mapped to the HTTP response body. `HttpRule` is
            # typically specified as an `google.api.http` annotation on the gRPC method.
            #
            # Each mapping specifies a URL path template and an HTTP method. The path
            # template may refer to one or more fields in the gRPC request message, as long
            # as each field is a non-repeated field with a primitive (non-message) type.
            # The path template controls how fields of the request message are mapped to
            # the URL path.
            #
            # Example:
            #
            #     service Messaging {
            #       rpc GetMessage(GetMessageRequest) returns (Message) {
            #         option (google.api.http) = {
            #             get: "/v1/{name=messages/*}"
            #         };
            #       }
            #     }
            #     message GetMessageRequest {
            #       string name = 1; // Mapped to URL path.
            #     }
            #     message Message {
            #       string text = 1; // The resource content.
            #     }
            #
            # This enables an HTTP REST to gRPC mapping as below:
            #
            # HTTP | gRPC
            # -----|-----
            # `GET /v1/messages/123456`  | `GetMessage(name: "messages/123456")`
            #
            # Any fields in the request message which are not bound by the path template
            # automatically become HTTP query parameters if there is no HTTP request body.
            # For example:
            #
            #     service Messaging {
            #       rpc GetMessage(GetMessageRequest) returns (Message) {
            #         option (google.api.http) = {
            #             get:"/v1/messages/{message_id}"
            #         };
            #       }
            #     }
            #     message GetMessageRequest {
            #       message SubMessage {
            #         string subfield = 1;
            #       }
            #       string message_id = 1; // Mapped to URL path.
            #       int64 revision = 2;    // Mapped to URL query parameter `revision`.
            #       SubMessage sub = 3;    // Mapped to URL query parameter `sub.subfield`.
            #     }
            #
            # This enables a HTTP JSON to RPC mapping as below:
            #
            # HTTP | gRPC
            # -----|-----
            # `GET /v1/messages/123456?revision=2&sub.subfield=foo` |
            # `GetMessage(message_id: "123456" revision: 2 sub: SubMessage(subfield:
            # "foo"))`
            #
            # Note that fields which are mapped to URL query parameters must have a
            # primitive type or a repeated primitive type or a non-repeated message type.
            # In the case of a repeated type, the parameter can be repeated in the URL
            # as `...?param=A&param=B`. In the case of a message type, each field of the
            # message is mapped to a separate parameter, such as
            # `...?foo.a=A&foo.b=B&foo.c=C`.
            #
            # For HTTP methods that allow a request body, the `body` field
            # specifies the mapping. Consider a REST update method on the
            # message resource collection:
            #
            #     service Messaging {
            #       rpc UpdateMessage(UpdateMessageRequest) returns (Message) {
            #         option (google.api.http) = {
            #           patch: "/v1/messages/{message_id}"
            #           body: "message"
            #         };
            #       }
            #     }
            #     message UpdateMessageRequest {
            #       string message_id = 1; // mapped to the URL
            #       Message message = 2;   // mapped to the body
            #     }
            #
            # The following HTTP JSON to RPC mapping is enabled, where the
            # representation of the JSON in the request body is determined by
            # protos JSON encoding:
            #
            # HTTP | gRPC
            # -----|-----
            # `PATCH /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id:
            # "123456" message { text: "Hi!" })`
            #
            # The special name `*` can be used in the body mapping to define that
            # every field not bound by the path template should be mapped to the
            # request body.  This enables the following alternative definition of
            # the update method:
            #
            #     service Messaging {
            #       rpc UpdateMessage(Message) returns (Message) {
            #         option (google.api.http) = {
            #           patch: "/v1/messages/{message_id}"
            #           body: "*"
            #         };
            #       }
            #     }
            #     message Message {
            #       string message_id = 1;
            #       string text = 2;
            #     }
            #
            #
            # The following HTTP JSON to RPC mapping is enabled:
            #
            # HTTP | gRPC
            # -----|-----
            # `PATCH /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id:
            # "123456" text: "Hi!")`
            #
            # Note that when using `*` in the body mapping, it is not possible to
            # have HTTP parameters, as all fields not bound by the path end in
            # the body. This makes this option more rarely used in practice when
            # defining REST APIs. The common usage of `*` is in custom methods
            # which don't use the URL at all for transferring data.
            #
            # It is possible to define multiple HTTP methods for one RPC by using
            # the `additional_bindings` option. Example:
            #
            #     service Messaging {
            #       rpc GetMessage(GetMessageRequest) returns (Message) {
            #         option (google.api.http) = {
            #           get: "/v1/messages/{message_id}"
            #           additional_bindings {
            #             get: "/v1/users/{user_id}/messages/{message_id}"
            #           }
            #         };
            #       }
            #     }
            #     message GetMessageRequest {
            #       string message_id = 1;
            #       string user_id = 2;
            #     }
            #
            # This enables the following two alternative HTTP JSON to RPC mappings:
            #
            # HTTP | gRPC
            # -----|-----
            # `GET /v1/messages/123456` | `GetMessage(message_id: "123456")`
            # `GET /v1/users/me/messages/123456` | `GetMessage(user_id: "me" message_id:
            # "123456")`
            #
            # ## Rules for HTTP mapping
            #
            # 1. Leaf request fields (recursive expansion nested messages in the request
            #    message) are classified into three categories:
            #    - Fields referred by the path template. They are passed via the URL path.
            #    - Fields referred by the HttpRule.body. They are passed via the HTTP
            #      request body.
            #    - All other fields are passed via the URL query parameters, and the
            #      parameter name is the field path in the request message. A repeated
            #      field can be represented as multiple query parameters under the same
            #      name.
            #  2. If HttpRule.body is "*", there is no URL query parameter, all fields
            #     are passed via URL path and HTTP request body.
            #  3. If HttpRule.body is omitted, there is no HTTP request body, all
            #     fields are passed via URL path and URL query parameters.
            #
            # ### Path template syntax
            #
            #     Template = "/" Segments [ Verb ] ;
            #     Segments = Segment { "/" Segment } ;
            #     Segment  = "*" | "**" | LITERAL | Variable ;
            #     Variable = "{" FieldPath [ "=" Segments ] "}" ;
            #     FieldPath = IDENT { "." IDENT } ;
            #     Verb     = ":" LITERAL ;
            #
            # The syntax `*` matches a single URL path segment. The syntax `**` matches
            # zero or more URL path segments, which must be the last part of the URL path
            # except the `Verb`.
            #
            # The syntax `Variable` matches part of the URL path as specified by its
            # template. A variable template must not contain other variables. If a variable
            # matches a single path segment, its template may be omitted, e.g. `{var}`
            # is equivalent to `{var=*}`.
            #
            # The syntax `LITERAL` matches literal text in the URL path. If the `LITERAL`
            # contains any reserved character, such characters should be percent-encoded
            # before the matching.
            #
            # If a variable contains exactly one path segment, such as `"{var}"` or
            # `"{var=*}"`, when such a variable is expanded into a URL path on the client
            # side, all characters except `[-_.~0-9a-zA-Z]` are percent-encoded. The
            # server side does the reverse decoding. Such variables show up in the
            # [Discovery
            # Document](https://developers.google.com/discovery/v1/reference/apis) as
            # `{var}`.
            #
            # If a variable contains multiple path segments, such as `"{var=foo/*}"`
            # or `"{var=**}"`, when such a variable is expanded into a URL path on the
            # client side, all characters except `[-_.~/0-9a-zA-Z]` are percent-encoded.
            # The server side does the reverse decoding, except "%2F" and "%2f" are left
            # unchanged. Such variables show up in the
            # [Discovery
            # Document](https://developers.google.com/discovery/v1/reference/apis) as
            # `{+var}`.
            #
            # ## Using gRPC API Service Configuration
            #
            # gRPC API Service Configuration (service config) is a configuration language
            # for configuring a gRPC service to become a user-facing product. The
            # service config is simply the YAML representation of the `google.api.Service`
            # proto message.
            #
            # As an alternative to annotating your proto file, you can configure gRPC
            # transcoding in your service config YAML files. You do this by specifying a
            # `HttpRule` that maps the gRPC method to a REST endpoint, achieving the same
            # effect as the proto annotation. This can be particularly useful if you
            # have a proto that is reused in multiple services. Note that any transcoding
            # specified in the service config will override any matching transcoding
            # configuration in the proto.
            #
            # Example:
            #
            #     http:
            #       rules:
            #         # Selects a gRPC method and applies HttpRule to it.
            #         - selector: example.v1.Messaging.GetMessage
            #           get: /v1/messages/{message_id}/{sub.subfield}
            #
            # ## Special notes
            #
            # When gRPC Transcoding is used to map a gRPC to JSON REST endpoints, the
            # proto to JSON conversion must follow the [proto3
            # specification](https://developers.google.com/protocol-buffers/docs/proto3#json).
            #
            # While the single segment variable follows the semantics of
            # [RFC 6570](https://tools.ietf.org/html/rfc6570) Section 3.2.2 Simple String
            # Expansion, the multi segment variable **does not** follow RFC 6570 Section
            # 3.2.3 Reserved Expansion. The reason is that the Reserved Expansion
            # does not expand special characters like `?` and `#`, which would lead
            # to invalid URLs. As the result, gRPC Transcoding uses a custom encoding
            # for multi segment variables.
            #
            # The path variables **must not** refer to any repeated or mapped field,
            # because client libraries are not capable of handling such variable expansion.
            #
            # The path variables **must not** capture the leading "/" character. The reason
            # is that the most common use case "{var}" does not capture the leading "/"
            # character. For consistency, all path variables must share the same behavior.
            #
            # Repeated message fields must not be mapped to URL query parameters, because
            # no client library can support such complicated mapping.
            #
            # If an API needs to use a JSON array for request or response body, it can map
            # the request or response body to a repeated field. However, some gRPC
            # Transcoding implementations may not support this feature.
          "body": "A String", # The name of the request field whose value is mapped to the HTTP request
              # body, or `*` for mapping all request fields not captured by the path
              # pattern to the HTTP body, or omitted for not having any HTTP request body.
              #
              # NOTE: the referred field must be present at the top-level of the request
              # message type.
          "additionalBindings": [ # Additional HTTP bindings for the selector. Nested bindings must
              # not contain an `additional_bindings` field themselves (that is,
              # the nesting may only be one level deep).
            # Object with schema name: HttpRule
          ],
          "get": "A String", # Maps to HTTP GET. Used for listing and getting information about
              # resources.
          "patch": "A String", # Maps to HTTP PATCH. Used for updating a resource.
          "custom": { # A custom pattern is used for defining custom HTTP verb. # The custom pattern is used for specifying an HTTP method that is not
              # included in the `pattern` field, such as HEAD, or "*" to leave the
              # HTTP method unspecified for this rule. The wild-card rule is useful
              # for services that provide content to Web (HTML) clients.
            "path": "A String", # The path matched by this custom verb.
            "kind": "A String", # The name of this custom HTTP verb.
          },
          "responseBody": "A String", # Optional. The name of the response field whose value is mapped to the HTTP
              # response body. When omitted, the entire response message will be used
              # as the HTTP response body.
              #
              # NOTE: The referred field must be present at the top-level of the response
              # message type.
          "put": "A String", # Maps to HTTP PUT. Used for replacing a resource.
          "post": "A String", # Maps to HTTP POST. Used for creating a resource or performing an action.
          "selector": "A String", # Selects a method to which this rule applies.
              #
              # Refer to selector for syntax details.
          "delete": "A String", # Maps to HTTP DELETE. Used for deleting a resource.
        },
      ],
      "fullyDecodeReservedExpansion": True or False, # When set to true, URL path parameters will be fully URI-decoded except in
          # cases of single segment matches in reserved expansion, where "%2F" will be
          # left encoded.
          #
          # The default behavior is to not decode RFC 6570 reserved characters in multi
          # segment matches.
    },
    "apis": [ # A list of API interfaces exported by this service. Only the `name` field
        # of the google.protobuf.Api needs to be provided by the configuration
        # author, as the remaining fields will be derived from the IDL during the
        # normalization process. It is an error to specify an API interface here
        # which cannot be resolved against the associated IDL files.
      { # Api is a light-weight descriptor for an API Interface.
          #
          # Interfaces are also described as "protocol buffer services" in some contexts,
          # such as by the "service" keyword in a .proto file, but they are different
          # from API Services, which represent a concrete implementation of an interface
          # as opposed to simply a description of methods and bindings. They are also
          # sometimes simply referred to as "APIs" in other contexts, such as the name of
          # this message itself. See https://cloud.google.com/apis/design/glossary for
          # detailed terminology.
        "methods": [ # The methods of this interface, in unspecified order.
          { # Method represents a method of an API interface.
            "name": "A String", # The simple name of this method.
            "requestStreaming": True or False, # If true, the request is streamed.
            "responseTypeUrl": "A String", # The URL of the output message type.
            "requestTypeUrl": "A String", # A URL of the input message type.
            "responseStreaming": True or False, # If true, the response is streamed.
            "syntax": "A String", # The source syntax of this method.
            "options": [ # Any metadata attached to the method.
              { # A protocol buffer option, which can be attached to a message, field,
                  # enumeration, etc.
                "name": "A String", # The option's name. For protobuf built-in options (options defined in
                    # descriptor.proto), this is the short name. For example, `"map_entry"`.
                    # For custom options, it should be the fully-qualified name. For example,
                    # `"google.api.http"`.
                "value": { # The option's value packed in an Any message. If the value is a primitive,
                    # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                    # should be used. If the value is an enum, it should be stored as an int32
                    # value using the google.protobuf.Int32Value type.
                  "a_key": "", # Properties of the object. Contains field @type with type URL.
                },
              },
            ],
          },
        ],
        "sourceContext": { # `SourceContext` represents information about the source of a # Source context for the protocol buffer service represented by this
            # message.
            # protobuf element, like the file in which it is defined.
          "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
              # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
        },
        "mixins": [ # Included interfaces. See Mixin.
          { # Declares an API Interface to be included in this interface. The including
              # interface must redeclare all the methods from the included interface, but
              # documentation and options are inherited as follows:
              #
              # - If after comment and whitespace stripping, the documentation
              #   string of the redeclared method is empty, it will be inherited
              #   from the original method.
              #
              # - Each annotation belonging to the service config (http,
              #   visibility) which is not set in the redeclared method will be
              #   inherited.
              #
              # - If an http annotation is inherited, the path pattern will be
              #   modified as follows. Any version prefix will be replaced by the
              #   version of the including interface plus the root path if
              #   specified.
              #
              # Example of a simple mixin:
              #
              #     package google.acl.v1;
              #     service AccessControl {
              #       // Get the underlying ACL object.
              #       rpc GetAcl(GetAclRequest) returns (Acl) {
              #         option (google.api.http).get = "/v1/{resource=**}:getAcl";
              #       }
              #     }
              #
              #     package google.storage.v2;
              #     service Storage {
              #       //       rpc GetAcl(GetAclRequest) returns (Acl);
              #
              #       // Get a data record.
              #       rpc GetData(GetDataRequest) returns (Data) {
              #         option (google.api.http).get = "/v2/{resource=**}";
              #       }
              #     }
              #
              # Example of a mixin configuration:
              #
              #     apis:
              #     - name: google.storage.v2.Storage
              #       mixins:
              #       - name: google.acl.v1.AccessControl
              #
              # The mixin construct implies that all methods in `AccessControl` are
              # also declared with same name and request/response types in
              # `Storage`. A documentation generator or annotation processor will
              # see the effective `Storage.GetAcl` method after inherting
              # documentation and annotations as follows:
              #
              #     service Storage {
              #       // Get the underlying ACL object.
              #       rpc GetAcl(GetAclRequest) returns (Acl) {
              #         option (google.api.http).get = "/v2/{resource=**}:getAcl";
              #       }
              #       ...
              #     }
              #
              # Note how the version in the path pattern changed from `v1` to `v2`.
              #
              # If the `root` field in the mixin is specified, it should be a
              # relative path under which inherited HTTP paths are placed. Example:
              #
              #     apis:
              #     - name: google.storage.v2.Storage
              #       mixins:
              #       - name: google.acl.v1.AccessControl
              #         root: acls
              #
              # This implies the following inherited HTTP annotation:
              #
              #     service Storage {
              #       // Get the underlying ACL object.
              #       rpc GetAcl(GetAclRequest) returns (Acl) {
              #         option (google.api.http).get = "/v2/acls/{resource=**}:getAcl";
              #       }
              #       ...
              #     }
            "root": "A String", # If non-empty specifies a path under which inherited HTTP paths
                # are rooted.
            "name": "A String", # The fully qualified name of the interface which is included.
          },
        ],
        "syntax": "A String", # The source syntax of the service.
        "version": "A String", # A version string for this interface. If specified, must have the form
            # `major-version.minor-version`, as in `1.10`. If the minor version is
            # omitted, it defaults to zero. If the entire version field is empty, the
            # major version is derived from the package name, as outlined below. If the
            # field is not empty, the version in the package name will be verified to be
            # consistent with what is provided here.
            #
            # The versioning schema uses [semantic
            # versioning](http://semver.org) where the major version number
            # indicates a breaking change and the minor version an additive,
            # non-breaking change. Both version numbers are signals to users
            # what to expect from different versions, and should be carefully
            # chosen based on the product plan.
            #
            # The major version is also reflected in the package name of the
            # interface, which must end in `v<major-version>`, as in
            # `google.feature.v1`. For major versions 0 and 1, the suffix can
            # be omitted. Zero major versions must only be used for
            # experimental, non-GA interfaces.
        "options": [ # Any metadata attached to the interface.
          { # A protocol buffer option, which can be attached to a message, field,
              # enumeration, etc.
            "name": "A String", # The option's name. For protobuf built-in options (options defined in
                # descriptor.proto), this is the short name. For example, `"map_entry"`.
                # For custom options, it should be the fully-qualified name. For example,
                # `"google.api.http"`.
            "value": { # The option's value packed in an Any message. If the value is a primitive,
                # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                # should be used. If the value is an enum, it should be stored as an int32
                # value using the google.protobuf.Int32Value type.
              "a_key": "", # Properties of the object. Contains field @type with type URL.
            },
          },
        ],
        "name": "A String", # The fully qualified name of this interface, including package name
            # followed by the interface's simple name.
      },
    ],
    "customError": { # Customize service error responses.  For example, list any service # Custom error configuration.
        # specific protobuf types that can appear in error detail lists of
        # error responses.
        #
        # Example:
        #
        #     custom_error:
        #       types:
        #       - google.foo.v1.CustomError
        #       - google.foo.v1.AnotherError
      "rules": [ # The list of custom error rules that apply to individual API messages.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # A custom error rule.
          "isErrorType": True or False, # Mark this message as possible payload in error response.  Otherwise,
              # objects of this type will be filtered when they appear in error payload.
          "selector": "A String", # Selects messages to which this rule applies.
              #
              # Refer to selector for syntax details.
        },
      ],
      "types": [ # The list of custom error detail types, e.g. 'google.foo.v1.CustomError'.
        "A String",
      ],
    },
    "quota": { # Quota configuration helps to achieve fairness and budgeting in service # Quota configuration.
        # usage.
        #
        # The metric based quota configuration works this way:
        # - The service configuration defines a set of metrics.
        # - For API calls, the quota.metric_rules maps methods to metrics with
        #   corresponding costs.
        # - The quota.limits defines limits on the metrics, which will be used for
        #   quota checks at runtime.
        #
        # An example quota configuration in yaml format:
        #
        #    quota:
        #      limits:
        #
        #      - name: apiWriteQpsPerProject
        #        metric: library.googleapis.com/write_calls
        #        unit: "1/min/{project}"  # rate limit for consumer projects
        #        values:
        #          STANDARD: 10000
        #
        #
        #      # The metric rules bind all methods to the read_calls metric,
        #      # except for the UpdateBook and DeleteBook methods. These two methods
        #      # are mapped to the write_calls metric, with the UpdateBook method
        #      # consuming at twice rate as the DeleteBook method.
        #      metric_rules:
        #      - selector: "*"
        #        metric_costs:
        #          library.googleapis.com/read_calls: 1
        #      - selector: google.example.library.v1.LibraryService.UpdateBook
        #        metric_costs:
        #          library.googleapis.com/write_calls: 2
        #      - selector: google.example.library.v1.LibraryService.DeleteBook
        #        metric_costs:
        #          library.googleapis.com/write_calls: 1
        #
        #  Corresponding Metric definition:
        #
        #      metrics:
        #      - name: library.googleapis.com/read_calls
        #        display_name: Read requests
        #        metric_kind: DELTA
        #        value_type: INT64
        #
        #      - name: library.googleapis.com/write_calls
        #        display_name: Write requests
        #        metric_kind: DELTA
        #        value_type: INT64
        #
      "metricRules": [ # List of `MetricRule` definitions, each one mapping a selected method to one
          # or more metrics.
        { # Bind API methods to metrics. Binding a method to a metric causes that
            # metric's configured quota behaviors to apply to the method call.
          "metricCosts": { # Metrics to update when the selected methods are called, and the associated
              # cost applied to each metric.
              #
              # The key of the map is the metric name, and the values are the amount
              # increased for the metric against which the quota limits are defined.
              # The value must not be negative.
            "a_key": "A String",
          },
          "selector": "A String", # Selects the methods to which this rule applies.
              #
              # Refer to selector for syntax details.
        },
      ],
      "limits": [ # List of `QuotaLimit` definitions for the service.
        { # `QuotaLimit` defines a specific limit that applies over a specified duration
            # for a limit type. There can be at most one limit for a duration and limit
            # type combination defined within a `QuotaGroup`.
          "displayName": "A String", # User-visible display name for this limit.
              # Optional. If not set, the UI will provide a default display name based on
              # the quota configuration. This field can be used to override the default
              # display name generated from the configuration.
          "name": "A String", # Name of the quota limit.
              #
              # The name must be provided, and it must be unique within the service. The
              # name can only include alphanumeric characters as well as '-'.
              #
              # The maximum length of the limit name is 64 characters.
          "defaultLimit": "A String", # Default number of tokens that can be consumed during the specified
              # duration. This is the number of tokens assigned when a client
              # application developer activates the service for his/her project.
              #
              # Specifying a value of 0 will block all requests. This can be used if you
              # are provisioning quota to selected consumers and blocking others.
              # Similarly, a value of -1 will indicate an unlimited quota. No other
              # negative values are allowed.
              #
              # Used by group-based quotas only.
          "metric": "A String", # The name of the metric this quota limit applies to. The quota limits with
              # the same metric will be checked together during runtime. The metric must be
              # defined within the service config.
          "values": { # Tiered limit values. You must specify this as a key:value pair, with an
              # integer value that is the maximum number of requests allowed for the
              # specified unit. Currently only STANDARD is supported.
            "a_key": "A String",
          },
          "maxLimit": "A String", # Maximum number of tokens that can be consumed during the specified
              # duration. Client application developers can override the default limit up
              # to this maximum. If specified, this value cannot be set to a value less
              # than the default limit. If not specified, it is set to the default limit.
              #
              # To allow clients to apply overrides with no upper bound, set this to -1,
              # indicating unlimited maximum quota.
              #
              # Used by group-based quotas only.
          "duration": "A String", # Duration of this limit in textual notation. Example: "100s", "24h", "1d".
              # For duration longer than a day, only multiple of days is supported. We
              # support only "100s" and "1d" for now. Additional support will be added in
              # the future. "0" indicates indefinite duration.
              #
              # Used by group-based quotas only.
          "freeTier": "A String", # Free tier value displayed in the Developers Console for this limit.
              # The free tier is the number of tokens that will be subtracted from the
              # billed amount when billing is enabled.
              # This field can only be set on a limit with duration "1d", in a billable
              # group; it is invalid on any other limit. If this field is not set, it
              # defaults to 0, indicating that there is no free tier for this service.
              #
              # Used by group-based quotas only.
          "unit": "A String", # Specify the unit of the quota limit. It uses the same syntax as
              # Metric.unit. The supported unit kinds are determined by the quota
              # backend system.
              #
              # Here are some examples:
              # * "1/min/{project}" for quota per minute per project.
              #
              # Note: the order of unit components is insignificant.
              # The "1" at the beginning is required to follow the metric unit syntax.
          "description": "A String", # Optional. User-visible, extended description for this quota limit.
              # Should be used only when more context is needed to understand this limit
              # than provided by the limit's display name (see: `display_name`).
        },
      ],
    },
    "metrics": [ # Defines the metrics used by this service.
      { # Defines a metric type and its schema. Once a metric descriptor is created,
          # deleting or altering it stops data collection and makes the metric type's
          # existing data unusable.
        "description": "A String", # A detailed description of the metric, which can be used in documentation.
        "displayName": "A String", # A concise name for the metric, which can be displayed in user interfaces.
            # Use sentence case without an ending period, for example "Request count".
            # This field is optional but it is recommended to be set for any metrics
            # associated with user-visible concepts, such as Quota.
        "name": "A String", # The resource name of the metric descriptor.
        "metricKind": "A String", # Whether the metric records instantaneous values, changes to a value, etc.
            # Some combinations of `metric_kind` and `value_type` might not be supported.
        "valueType": "A String", # Whether the measurement is an integer, a floating-point number, etc.
            # Some combinations of `metric_kind` and `value_type` might not be supported.
        "labels": [ # The set of labels that can be used to describe a specific
            # instance of this metric type. For example, the
            # `appengine.googleapis.com/http/server/response_latencies` metric
            # type has a label for the HTTP response code, `response_code`, so
            # you can look at latencies for successful responses or just
            # for responses that failed.
          { # A description of a label.
            "valueType": "A String", # The type of data that can be assigned to the label.
            "description": "A String", # A human-readable description for the label.
            "key": "A String", # The label key.
          },
        ],
        "launchStage": "A String", # Optional. The launch stage of the metric definition.
        "type": "A String", # The metric type, including its DNS name prefix. The type is not
            # URL-encoded.  All user-defined metric types have the DNS name
            # `custom.googleapis.com` or `external.googleapis.com`.  Metric types should
            # use a natural hierarchical grouping. For example:
            #
            #     "custom.googleapis.com/invoice/paid/amount"
            #     "external.googleapis.com/prometheus/up"
            #     "appengine.googleapis.com/http/server/response_latencies"
        "unit": "A String", # The unit in which the metric value is reported. It is only applicable
            # if the `value_type` is `INT64`, `DOUBLE`, or `DISTRIBUTION`. The
            # supported units are a subset of [The Unified Code for Units of
            # Measure](http://unitsofmeasure.org/ucum.html) standard:
            #
            # **Basic units (UNIT)**
            #
            # * `bit`   bit
            # * `By`    byte
            # * `s`     second
            # * `min`   minute
            # * `h`     hour
            # * `d`     day
            #
            # **Prefixes (PREFIX)**
            #
            # * `k`     kilo    (10**3)
            # * `M`     mega    (10**6)
            # * `G`     giga    (10**9)
            # * `T`     tera    (10**12)
            # * `P`     peta    (10**15)
            # * `E`     exa     (10**18)
            # * `Z`     zetta   (10**21)
            # * `Y`     yotta   (10**24)
            # * `m`     milli   (10**-3)
            # * `u`     micro   (10**-6)
            # * `n`     nano    (10**-9)
            # * `p`     pico    (10**-12)
            # * `f`     femto   (10**-15)
            # * `a`     atto    (10**-18)
            # * `z`     zepto   (10**-21)
            # * `y`     yocto   (10**-24)
            # * `Ki`    kibi    (2**10)
            # * `Mi`    mebi    (2**20)
            # * `Gi`    gibi    (2**30)
            # * `Ti`    tebi    (2**40)
            #
            # **Grammar**
            #
            # The grammar also includes these connectors:
            #
            # * `/`    division (as an infix operator, e.g. `1/s`).
            # * `.`    multiplication (as an infix operator, e.g. `GBy.d`)
            #
            # The grammar for a unit is as follows:
            #
            #     Expression = Component { "." Component } { "/" Component } ;
            #
            #     Component = ( [ PREFIX ] UNIT | "%" ) [ Annotation ]
            #               | Annotation
            #               | "1"
            #               ;
            #
            #     Annotation = "{" NAME "}" ;
            #
            # Notes:
            #
            # * `Annotation` is just a comment if it follows a `UNIT` and is
            #    equivalent to `1` if it is used alone. For examples,
            #    `{requests}/s == 1/s`, `By{transmitted}/s == By/s`.
            # * `NAME` is a sequence of non-blank printable ASCII characters not
            #    containing '{' or '}'.
            # * `1` represents dimensionless value 1, such as in `1/s`.
            # * `%` represents dimensionless value 1/100, and annotates values giving
            #    a percentage.
        "metadata": { # Additional annotations that can be used to guide the usage of a metric. # Optional. Metadata which can be used to guide usage of the metric.
          "launchStage": "A String", # Deprecated. Please use the MetricDescriptor.launch_stage instead.
              # The launch stage of the metric definition.
          "ingestDelay": "A String", # The delay of data points caused by ingestion. Data points older than this
              # age are guaranteed to be ingested and available to be read, excluding
              # data loss due to errors.
          "samplePeriod": "A String", # The sampling period of metric data points. For metrics which are written
              # periodically, consecutive data points are stored at this time interval,
              # excluding data loss due to errors. Metrics with a higher granularity have
              # a smaller sampling period.
        },
      },
    ],
    "enums": [ # A list of all enum types included in this API service.  Enums
        # referenced directly or indirectly by the `apis` are automatically
        # included.  Enums which are not referenced but shall be included
        # should be listed here by name. Example:
        #
        #     enums:
        #     - name: google.someapi.v1.SomeEnum
      { # Enum type definition.
        "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
            # protobuf element, like the file in which it is defined.
          "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
              # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
        },
        "enumvalue": [ # Enum value definitions.
          { # Enum value definition.
            "options": [ # Protocol buffer options.
              { # A protocol buffer option, which can be attached to a message, field,
                  # enumeration, etc.
                "name": "A String", # The option's name. For protobuf built-in options (options defined in
                    # descriptor.proto), this is the short name. For example, `"map_entry"`.
                    # For custom options, it should be the fully-qualified name. For example,
                    # `"google.api.http"`.
                "value": { # The option's value packed in an Any message. If the value is a primitive,
                    # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                    # should be used. If the value is an enum, it should be stored as an int32
                    # value using the google.protobuf.Int32Value type.
                  "a_key": "", # Properties of the object. Contains field @type with type URL.
                },
              },
            ],
            "name": "A String", # Enum value name.
            "number": 42, # Enum value number.
          },
        ],
        "options": [ # Protocol buffer options.
          { # A protocol buffer option, which can be attached to a message, field,
              # enumeration, etc.
            "name": "A String", # The option's name. For protobuf built-in options (options defined in
                # descriptor.proto), this is the short name. For example, `"map_entry"`.
                # For custom options, it should be the fully-qualified name. For example,
                # `"google.api.http"`.
            "value": { # The option's value packed in an Any message. If the value is a primitive,
                # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                # should be used. If the value is an enum, it should be stored as an int32
                # value using the google.protobuf.Int32Value type.
              "a_key": "", # Properties of the object. Contains field @type with type URL.
            },
          },
        ],
        "name": "A String", # Enum type name.
        "syntax": "A String", # The source syntax.
      },
    ],
    "types": [ # A list of all proto message types included in this API service.
        # Types referenced directly or indirectly by the `apis` are
        # automatically included.  Messages which are not referenced but
        # shall be included, such as types used by the `google.protobuf.Any` type,
        # should be listed here by name. Example:
        #
        #     types:
        #     - name: google.protobuf.Int32
      { # A protocol buffer message type.
        "oneofs": [ # The list of types appearing in `oneof` definitions in this type.
          "A String",
        ],
        "name": "A String", # The fully qualified message name.
        "fields": [ # The list of fields.
          { # A single field of a message type.
            "kind": "A String", # The field type.
            "oneofIndex": 42, # The index of the field type in `Type.oneofs`, for message or enumeration
                # types. The first type has index 1; zero means the type is not in the list.
            "typeUrl": "A String", # The field type URL, without the scheme, for message or enumeration
                # types. Example: `"type.googleapis.com/google.protobuf.Timestamp"`.
            "name": "A String", # The field name.
            "defaultValue": "A String", # The string value of the default value of this field. Proto2 syntax only.
            "jsonName": "A String", # The field JSON name.
            "number": 42, # The field number.
            "cardinality": "A String", # The field cardinality.
            "options": [ # The protocol buffer options.
              { # A protocol buffer option, which can be attached to a message, field,
                  # enumeration, etc.
                "name": "A String", # The option's name. For protobuf built-in options (options defined in
                    # descriptor.proto), this is the short name. For example, `"map_entry"`.
                    # For custom options, it should be the fully-qualified name. For example,
                    # `"google.api.http"`.
                "value": { # The option's value packed in an Any message. If the value is a primitive,
                    # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                    # should be used. If the value is an enum, it should be stored as an int32
                    # value using the google.protobuf.Int32Value type.
                  "a_key": "", # Properties of the object. Contains field @type with type URL.
                },
              },
            ],
            "packed": True or False, # Whether to use alternative packed wire representation.
          },
        ],
        "syntax": "A String", # The source syntax.
        "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
            # protobuf element, like the file in which it is defined.
          "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
              # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
        },
        "options": [ # The protocol buffer options.
          { # A protocol buffer option, which can be attached to a message, field,
              # enumeration, etc.
            "name": "A String", # The option's name. For protobuf built-in options (options defined in
                # descriptor.proto), this is the short name. For example, `"map_entry"`.
                # For custom options, it should be the fully-qualified name. For example,
                # `"google.api.http"`.
            "value": { # The option's value packed in an Any message. If the value is a primitive,
                # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                # should be used. If the value is an enum, it should be stored as an int32
                # value using the google.protobuf.Int32Value type.
              "a_key": "", # Properties of the object. Contains field @type with type URL.
            },
          },
        ],
      },
    ],
    "logging": { # Logging configuration of the service. # Logging configuration.
        #
        # The following example shows how to configure logs to be sent to the
        # producer and consumer projects. In the example, the `activity_history`
        # log is sent to both the producer and consumer projects, whereas the
        # `purchase_history` log is only sent to the producer project.
        #
        #     monitored_resources:
        #     - type: library.googleapis.com/branch
        #       labels:
        #       - key: /city
        #         description: The city where the library branch is located in.
        #       - key: /name
        #         description: The name of the branch.
        #     logs:
        #     - name: activity_history
        #       labels:
        #       - key: /customer_id
        #     - name: purchase_history
        #     logging:
        #       producer_destinations:
        #       - monitored_resource: library.googleapis.com/branch
        #         logs:
        #         - activity_history
        #         - purchase_history
        #       consumer_destinations:
        #       - monitored_resource: library.googleapis.com/branch
        #         logs:
        #         - activity_history
      "producerDestinations": [ # Logging configurations for sending logs to the producer project.
          # There can be multiple producer destinations, each one must have a
          # different monitored resource type. A log can be used in at most
          # one producer destination.
        { # Configuration of a specific logging destination (the producer project
            # or the consumer project).
          "monitoredResource": "A String", # The monitored resource type. The type must be defined in the
              # Service.monitored_resources section.
          "logs": [ # Names of the logs to be sent to this destination. Each name must
              # be defined in the Service.logs section. If the log name is
              # not a domain scoped name, it will be automatically prefixed with
              # the service name followed by "/".
            "A String",
          ],
        },
      ],
      "consumerDestinations": [ # Logging configurations for sending logs to the consumer project.
          # There can be multiple consumer destinations, each one must have a
          # different monitored resource type. A log can be used in at most
          # one consumer destination.
        { # Configuration of a specific logging destination (the producer project
            # or the consumer project).
          "monitoredResource": "A String", # The monitored resource type. The type must be defined in the
              # Service.monitored_resources section.
          "logs": [ # Names of the logs to be sent to this destination. Each name must
              # be defined in the Service.logs section. If the log name is
              # not a domain scoped name, it will be automatically prefixed with
              # the service name followed by "/".
            "A String",
          ],
        },
      ],
    },
    "name": "A String", # The service name, which is a DNS-like logical identifier for the
        # service, such as `calendar.googleapis.com`. The service name
        # typically goes through DNS verification to make sure the owner
        # of the service also owns the DNS name.
    "documentation": { # `Documentation` provides the information for describing a service. # Additional API documentation.
        #
        # Example:
        # <pre><code>documentation:
        #   summary: >
        #     The Google Calendar API gives access
        #     to most calendar features.
        #   pages:
        #   - name: Overview
        #     content: &#40;== include google/foo/overview.md ==&#41;
        #   - name: Tutorial
        #     content: &#40;== include google/foo/tutorial.md ==&#41;
        #     subpages;
        #     - name: Java
        #       content: &#40;== include google/foo/tutorial_java.md ==&#41;
        #   rules:
        #   - selector: google.calendar.Calendar.Get
        #     description: >
        #       ...
        #   - selector: google.calendar.Calendar.Put
        #     description: >
        #       ...
        # </code></pre>
        # Documentation is provided in markdown syntax. In addition to
        # standard markdown features, definition lists, tables and fenced
        # code blocks are supported. Section headers can be provided and are
        # interpreted relative to the section nesting of the context where
        # a documentation fragment is embedded.
        #
        # Documentation from the IDL is merged with documentation defined
        # via the config at normalization time, where documentation provided
        # by config rules overrides IDL provided.
        #
        # A number of constructs specific to the API platform are supported
        # in documentation text.
        #
        # In order to reference a proto element, the following
        # notation can be used:
        # <pre><code>&#91;fully.qualified.proto.name]&#91;]</code></pre>
        # To override the display text used for the link, this can be used:
        # <pre><code>&#91;display text]&#91;fully.qualified.proto.name]</code></pre>
        # Text can be excluded from doc using the following notation:
        # <pre><code>&#40;-- internal comment --&#41;</code></pre>
        #
        # A few directives are available in documentation. Note that
        # directives must appear on a single line to be properly
        # identified. The `include` directive includes a markdown file from
        # an external source:
        # <pre><code>&#40;== include path/to/file ==&#41;</code></pre>
        # The `resource_for` directive marks a message to be the resource of
        # a collection in REST view. If it is not specified, tools attempt
        # to infer the resource from the operations in a collection:
        # <pre><code>&#40;== resource_for v1.shelves.books ==&#41;</code></pre>
        # The directive `suppress_warning` does not directly affect documentation
        # and is documented together with service config validation.
      "rules": [ # A list of documentation rules that apply to individual API elements.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # A documentation rule provides information about individual API elements.
          "description": "A String", # Description of the selected API(s).
          "deprecationDescription": "A String", # Deprecation description of the selected element(s). It can be provided if
              # an element is marked as `deprecated`.
          "selector": "A String", # The selector is a comma-separated list of patterns. Each pattern is a
              # qualified name of the element which may end in "*", indicating a wildcard.
              # Wildcards are only allowed at the end and for a whole component of the
              # qualified name, i.e. "foo.*" is ok, but not "foo.b*" or "foo.*.bar". A
              # wildcard will match one or more components. To specify a default for all
              # applicable elements, the whole pattern "*" is used.
        },
      ],
      "documentationRootUrl": "A String", # The URL to the root of documentation.
      "overview": "A String", # Declares a single overview page. For example:
          # <pre><code>documentation:
          #   summary: ...
          #   overview: &#40;== include overview.md ==&#41;
          # </code></pre>
          # This is a shortcut for the following declaration (using pages style):
          # <pre><code>documentation:
          #   summary: ...
          #   pages:
          #   - name: Overview
          #     content: &#40;== include overview.md ==&#41;
          # </code></pre>
          # Note: you cannot specify both `overview` field and `pages` field.
      "pages": [ # The top level pages for the documentation set.
        { # Represents a documentation page. A page can contain subpages to represent
            # nested documentation set structure.
          "content": "A String", # The Markdown content of the page. You can use <code>&#40;== include {path}
              # ==&#41;</code> to include content from a Markdown file.
          "subpages": [ # Subpages of this page. The order of subpages specified here will be
              # honored in the generated docset.
            # Object with schema name: Page
          ],
          "name": "A String", # The name of the page. It will be used as an identity of the page to
              # generate URI of the page, text of the link to this page in navigation,
              # etc. The full page name (start from the root page name to this page
              # concatenated with `.`) can be used as reference to the page in your
              # documentation. For example:
              # <pre><code>pages:
              # - name: Tutorial
              #   content: &#40;== include tutorial.md ==&#41;
              #   subpages:
              #   - name: Java
              #     content: &#40;== include tutorial_java.md ==&#41;
              # </code></pre>
              # You can reference `Java` page using Markdown reference link syntax:
              # `Java`.
        },
      ],
      "summary": "A String", # A short summary of what the service does. Can only be provided by
          # plain text.
    },
    "sourceInfo": { # Source information used to create a Service Config # Output only. The source information for this configuration if available.
      "sourceFiles": [ # All files used during config generation.
        {
          "a_key": "", # Properties of the object. Contains field @type with type URL.
        },
      ],
    },
    "systemTypes": [ # A list of all proto message types included in this API service.
        # It serves similar purpose as [google.api.Service.types], except that
        # these types are not needed by user-defined APIs. Therefore, they will not
        # show up in the generated discovery doc. This field should only be used
        # to define system APIs in ESF.
      { # A protocol buffer message type.
        "oneofs": [ # The list of types appearing in `oneof` definitions in this type.
          "A String",
        ],
        "name": "A String", # The fully qualified message name.
        "fields": [ # The list of fields.
          { # A single field of a message type.
            "kind": "A String", # The field type.
            "oneofIndex": 42, # The index of the field type in `Type.oneofs`, for message or enumeration
                # types. The first type has index 1; zero means the type is not in the list.
            "typeUrl": "A String", # The field type URL, without the scheme, for message or enumeration
                # types. Example: `"type.googleapis.com/google.protobuf.Timestamp"`.
            "name": "A String", # The field name.
            "defaultValue": "A String", # The string value of the default value of this field. Proto2 syntax only.
            "jsonName": "A String", # The field JSON name.
            "number": 42, # The field number.
            "cardinality": "A String", # The field cardinality.
            "options": [ # The protocol buffer options.
              { # A protocol buffer option, which can be attached to a message, field,
                  # enumeration, etc.
                "name": "A String", # The option's name. For protobuf built-in options (options defined in
                    # descriptor.proto), this is the short name. For example, `"map_entry"`.
                    # For custom options, it should be the fully-qualified name. For example,
                    # `"google.api.http"`.
                "value": { # The option's value packed in an Any message. If the value is a primitive,
                    # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                    # should be used. If the value is an enum, it should be stored as an int32
                    # value using the google.protobuf.Int32Value type.
                  "a_key": "", # Properties of the object. Contains field @type with type URL.
                },
              },
            ],
            "packed": True or False, # Whether to use alternative packed wire representation.
          },
        ],
        "syntax": "A String", # The source syntax.
        "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
            # protobuf element, like the file in which it is defined.
          "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
              # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
        },
        "options": [ # The protocol buffer options.
          { # A protocol buffer option, which can be attached to a message, field,
              # enumeration, etc.
            "name": "A String", # The option's name. For protobuf built-in options (options defined in
                # descriptor.proto), this is the short name. For example, `"map_entry"`.
                # For custom options, it should be the fully-qualified name. For example,
                # `"google.api.http"`.
            "value": { # The option's value packed in an Any message. If the value is a primitive,
                # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                # should be used. If the value is an enum, it should be stored as an int32
                # value using the google.protobuf.Int32Value type.
              "a_key": "", # Properties of the object. Contains field @type with type URL.
            },
          },
        ],
      },
    ],
    "context": { # `Context` defines which contexts an API requests. # Context configuration.
        #
        # Example:
        #
        #     context:
        #       rules:
        #       - selector: "*"
        #         requested:
        #         - google.rpc.context.ProjectContext
        #         - google.rpc.context.OriginContext
        #
        # The above specifies that all methods in the API request
        # `google.rpc.context.ProjectContext` and
        # `google.rpc.context.OriginContext`.
        #
        # Available context types are defined in package
        # `google.rpc.context`.
        #
        # This also provides mechanism to whitelist any protobuf message extension that
        # can be sent in grpc metadata using “x-goog-ext-<extension_id>-bin” and
        # “x-goog-ext-<extension_id>-jspb” format. For example, list any service
        # specific protobuf types that can appear in grpc metadata as follows in your
        # yaml file:
        #
        # Example:
        #
        #     context:
        #       rules:
        #        - selector: "google.example.library.v1.LibraryService.CreateBook"
        #          allowed_request_extensions:
        #          - google.foo.v1.NewExtension
        #          allowed_response_extensions:
        #          - google.foo.v1.NewExtension
        #
        # You can also specify extension ID instead of fully qualified extension name
        # here.
      "rules": [ # A list of RPC context rules that apply to individual API methods.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # A context rule provides information about the context for an individual API
            # element.
          "provided": [ # A list of full type names of provided contexts.
            "A String",
          ],
          "allowedResponseExtensions": [ # A list of full type names or extension IDs of extensions allowed in grpc
              # side channel from backend to client.
            "A String",
          ],
          "selector": "A String", # Selects the methods to which this rule applies.
              #
              # Refer to selector for syntax details.
          "allowedRequestExtensions": [ # A list of full type names or extension IDs of extensions allowed in grpc
              # side channel from client to backend.
            "A String",
          ],
          "requested": [ # A list of full type names of requested contexts.
            "A String",
          ],
        },
      ],
    },
    "endpoints": [ # Configuration for network endpoints.  If this is empty, then an endpoint
        # with the same name as the service is automatically generated to service all
        # defined APIs.
      { # `Endpoint` describes a network endpoint that serves a set of APIs.
          # A service may expose any number of endpoints, and all endpoints share the
          # same service configuration, such as quota configuration and monitoring
          # configuration.
          #
          # Example service configuration:
          #
          #     name: library-example.googleapis.com
          #     endpoints:
          #       # Below entry makes 'google.example.library.v1.Library'
          #       # API be served from endpoint address library-example.googleapis.com.
          #       # It also allows HTTP OPTIONS calls to be passed to the backend, for
          #       # it to decide whether the subsequent cross-origin request is
          #       # allowed to proceed.
          #     - name: library-example.googleapis.com
          #       allow_cors: true
        "allowCors": True or False, # Allowing
            # [CORS](https://en.wikipedia.org/wiki/Cross-origin_resource_sharing), aka
            # cross-domain traffic, would allow the backends served from this endpoint to
            # receive and respond to HTTP OPTIONS requests. The response will be used by
            # the browser to determine whether the subsequent cross-origin request is
            # allowed to proceed.
        "target": "A String", # The specification of an Internet routable address of API frontend that will
            # handle requests to this [API
            # Endpoint](https://cloud.google.com/apis/design/glossary). It should be
            # either a valid IPv4 address or a fully-qualified domain name. For example,
            # "8.8.8.8" or "myservice.appspot.com".
        "features": [ # The list of features enabled on this endpoint.
          "A String",
        ],
        "name": "A String", # The canonical name of this endpoint.
        "aliases": [ # DEPRECATED: This field is no longer supported. Instead of using aliases,
            # please specify multiple google.api.Endpoint for each of the intended
            # aliases.
            #
            # Additional names that this endpoint will be hosted on.
          "A String",
        ],
      },
    ],
  }</pre>
</div>

<div class="method">
    <code class="details" id="get">get(serviceName, configId, x__xgafv=None, view=None)</code>
  <pre>Gets a service configuration (version) for a managed service.

Args:
  serviceName: string, The name of the service.  See the [overview](/service-management/overview)
for naming requirements.  For example: `example.googleapis.com`. (required)
  configId: string, The id of the service configuration resource.

This field must be specified for the server to return all fields, including
`SourceInfo`. (required)
  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format
  view: string, Specifies which parts of the Service Config should be returned in the
response.

Returns:
  An object of the form:

    { # `Service` is the root object of Google service configuration schema. It
      # describes basic information about a service, such as the name and the
      # title, and delegates other aspects to sub-sections. Each sub-section is
      # either a proto message or a repeated proto message that configures a
      # specific aspect, such as auth. See each proto message definition for details.
      #
      # Example:
      #
      #     type: google.api.Service
      #     config_version: 3
      #     name: calendar.googleapis.com
      #     title: Google Calendar API
      #     apis:
      #     - name: google.calendar.v3.Calendar
      #     authentication:
      #       providers:
      #       - id: google_calendar_auth
      #         jwks_uri: https://www.googleapis.com/oauth2/v1/certs
      #         issuer: https://securetoken.google.com
      #       rules:
      #       - selector: "*"
      #         requirements:
      #           provider_id: google_calendar_auth
    "control": { # Selects and configures the service controller used by the service.  The # Configuration for the service control plane.
        # service controller handles features like abuse, quota, billing, logging,
        # monitoring, etc.
      "environment": "A String", # The service control environment to use. If empty, no control plane
          # feature (like quota and billing) will be enabled.
    },
    "monitoredResources": [ # Defines the monitored resources used by this service. This is required
        # by the Service.monitoring and Service.logging configurations.
      { # An object that describes the schema of a MonitoredResource object using a
          # type name and a set of labels.  For example, the monitored resource
          # descriptor for Google Compute Engine VM instances has a type of
          # `"gce_instance"` and specifies the use of the labels `"instance_id"` and
          # `"zone"` to identify particular VM instances.
          #
          # Different APIs can support different monitored resource types. APIs generally
          # provide a `list` method that returns the monitored resource descriptors used
          # by the API.
          #
          # Next ID: 10
        "displayName": "A String", # Optional. A concise name for the monitored resource type that might be
            # displayed in user interfaces. It should be a Title Cased Noun Phrase,
            # without any article or other determiners. For example,
            # `"Google Cloud SQL Database"`.
        "name": "A String", # Optional. The resource name of the monitored resource descriptor:
            # `"projects/{project_id}/monitoredResourceDescriptors/{type}"` where
            # {type} is the value of the `type` field in this object and
            # {project_id} is a project ID that provides API-specific context for
            # accessing the type.  APIs that do not use project information can use the
            # resource name format `"monitoredResourceDescriptors/{type}"`.
        "labels": [ # Required. A set of labels used to describe instances of this monitored
            # resource type. For example, an individual Google Cloud SQL database is
            # identified by values for the labels `"database_id"` and `"zone"`.
          { # A description of a label.
            "valueType": "A String", # The type of data that can be assigned to the label.
            "description": "A String", # A human-readable description for the label.
            "key": "A String", # The label key.
          },
        ],
        "launchStage": "A String", # Optional. The launch stage of the monitored resource definition.
        "type": "A String", # Required. The monitored resource type. For example, the type
            # `"cloudsql_database"` represents databases in Google Cloud SQL.
            # The maximum length of this value is 256 characters.
        "description": "A String", # Optional. A detailed description of the monitored resource type that might
            # be used in documentation.
      },
    ],
    "logs": [ # Defines the logs used by this service.
      { # A description of a log type. Example in YAML format:
          #
          #     - name: library.googleapis.com/activity_history
          #       description: The history of borrowing and returning library items.
          #       display_name: Activity
          #       labels:
          #       - key: /customer_id
          #         description: Identifier of a library customer
        "labels": [ # The set of labels that are available to describe a specific log entry.
            # Runtime requests that contain labels not specified here are
            # considered invalid.
          { # A description of a label.
            "valueType": "A String", # The type of data that can be assigned to the label.
            "description": "A String", # A human-readable description for the label.
            "key": "A String", # The label key.
          },
        ],
        "displayName": "A String", # The human-readable name for this log. This information appears on
            # the user interface and should be concise.
        "name": "A String", # The name of the log. It must be less than 512 characters long and can
            # include the following characters: upper- and lower-case alphanumeric
            # characters [A-Za-z0-9], and punctuation characters including
            # slash, underscore, hyphen, period [/_-.].
        "description": "A String", # A human-readable description of this log. This information appears in
            # the documentation and can contain details.
      },
    ],
    "systemParameters": { # ### System parameter configuration # System parameter configuration.
        #
        # A system parameter is a special kind of parameter defined by the API
        # system, not by an individual API. It is typically mapped to an HTTP header
        # and/or a URL query parameter. This configuration specifies which methods
        # change the names of the system parameters.
      "rules": [ # Define system parameters.
          #
          # The parameters defined here will override the default parameters
          # implemented by the system. If this field is missing from the service
          # config, default system parameters will be used. Default system parameters
          # and names is implementation-dependent.
          #
          # Example: define api key for all methods
          #
          #     system_parameters
          #       rules:
          #         - selector: "*"
          #           parameters:
          #             - name: api_key
          #               url_query_parameter: api_key
          #
          #
          # Example: define 2 api key names for a specific method.
          #
          #     system_parameters
          #       rules:
          #         - selector: "/ListShelves"
          #           parameters:
          #             - name: api_key
          #               http_header: Api-Key1
          #             - name: api_key
          #               http_header: Api-Key2
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # Define a system parameter rule mapping system parameter definitions to
            # methods.
          "parameters": [ # Define parameters. Multiple names may be defined for a parameter.
              # For a given method call, only one of them should be used. If multiple
              # names are used the behavior is implementation-dependent.
              # If none of the specified names are present the behavior is
              # parameter-dependent.
            { # Define a parameter's name and location. The parameter may be passed as either
                # an HTTP header or a URL query parameter, and if both are passed the behavior
                # is implementation-dependent.
              "urlQueryParameter": "A String", # Define the URL query parameter name to use for the parameter. It is case
                  # sensitive.
              "httpHeader": "A String", # Define the HTTP header name to use for the parameter. It is case
                  # insensitive.
              "name": "A String", # Define the name of the parameter, such as "api_key" . It is case sensitive.
            },
          ],
          "selector": "A String", # Selects the methods to which this rule applies. Use '*' to indicate all
              # methods in all APIs.
              #
              # Refer to selector for syntax details.
        },
      ],
    },
    "id": "A String", # A unique ID for a specific instance of this message, typically assigned
        # by the client for tracking purpose. If empty, the server may choose to
        # generate one instead. Must be no longer than 60 characters.
    "backend": { # `Backend` defines the backend configuration for a service. # API backend configuration.
      "rules": [ # A list of API backend rules that apply to individual API methods.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # A backend rule provides configuration for an individual API element.
          "jwtAudience": "A String", # The JWT audience is used when generating a JWT id token for the backend.
          "pathTranslation": "A String",
          "minDeadline": 3.14, # Minimum deadline in seconds needed for this method. Calls having deadline
              # value lower than this will be rejected.
          "selector": "A String", # Selects the methods to which this rule applies.
              #
              # Refer to selector for syntax details.
          "operationDeadline": 3.14, # The number of seconds to wait for the completion of a long running
              # operation. The default is no deadline.
          "deadline": 3.14, # The number of seconds to wait for a response from a request.  The default
              # deadline for gRPC is infinite (no deadline) and HTTP requests is 5 seconds.
          "address": "A String", # The address of the API backend.
        },
      ],
    },
    "monitoring": { # Monitoring configuration of the service. # Monitoring configuration.
        #
        # The example below shows how to configure monitored resources and metrics
        # for monitoring. In the example, a monitored resource and two metrics are
        # defined. The `library.googleapis.com/book/returned_count` metric is sent
        # to both producer and consumer projects, whereas the
        # `library.googleapis.com/book/overdue_count` metric is only sent to the
        # consumer project.
        #
        #     monitored_resources:
        #     - type: library.googleapis.com/branch
        #       labels:
        #       - key: /city
        #         description: The city where the library branch is located in.
        #       - key: /name
        #         description: The name of the branch.
        #     metrics:
        #     - name: library.googleapis.com/book/returned_count
        #       metric_kind: DELTA
        #       value_type: INT64
        #       labels:
        #       - key: /customer_id
        #     - name: library.googleapis.com/book/overdue_count
        #       metric_kind: GAUGE
        #       value_type: INT64
        #       labels:
        #       - key: /customer_id
        #     monitoring:
        #       producer_destinations:
        #       - monitored_resource: library.googleapis.com/branch
        #         metrics:
        #         - library.googleapis.com/book/returned_count
        #       consumer_destinations:
        #       - monitored_resource: library.googleapis.com/branch
        #         metrics:
        #         - library.googleapis.com/book/returned_count
        #         - library.googleapis.com/book/overdue_count
      "producerDestinations": [ # Monitoring configurations for sending metrics to the producer project.
          # There can be multiple producer destinations. A monitored resouce type may
          # appear in multiple monitoring destinations if different aggregations are
          # needed for different sets of metrics associated with that monitored
          # resource type. A monitored resource and metric pair may only be used once
          # in the Monitoring configuration.
        { # Configuration of a specific monitoring destination (the producer project
            # or the consumer project).
          "monitoredResource": "A String", # The monitored resource type. The type must be defined in
              # Service.monitored_resources section.
          "metrics": [ # Types of the metrics to report to this monitoring destination.
              # Each type must be defined in Service.metrics section.
            "A String",
          ],
        },
      ],
      "consumerDestinations": [ # Monitoring configurations for sending metrics to the consumer project.
          # There can be multiple consumer destinations. A monitored resouce type may
          # appear in multiple monitoring destinations if different aggregations are
          # needed for different sets of metrics associated with that monitored
          # resource type. A monitored resource and metric pair may only be used once
          # in the Monitoring configuration.
        { # Configuration of a specific monitoring destination (the producer project
            # or the consumer project).
          "monitoredResource": "A String", # The monitored resource type. The type must be defined in
              # Service.monitored_resources section.
          "metrics": [ # Types of the metrics to report to this monitoring destination.
              # Each type must be defined in Service.metrics section.
            "A String",
          ],
        },
      ],
    },
    "billing": { # Billing related configuration of the service. # Billing configuration.
        #
        # The following example shows how to configure monitored resources and metrics
        # for billing:
        #
        #     monitored_resources:
        #     - type: library.googleapis.com/branch
        #       labels:
        #       - key: /city
        #         description: The city where the library branch is located in.
        #       - key: /name
        #         description: The name of the branch.
        #     metrics:
        #     - name: library.googleapis.com/book/borrowed_count
        #       metric_kind: DELTA
        #       value_type: INT64
        #     billing:
        #       consumer_destinations:
        #       - monitored_resource: library.googleapis.com/branch
        #         metrics:
        #         - library.googleapis.com/book/borrowed_count
      "consumerDestinations": [ # Billing configurations for sending metrics to the consumer project.
          # There can be multiple consumer destinations per service, each one must have
          # a different monitored resource type. A metric can be used in at most
          # one consumer destination.
        { # Configuration of a specific billing destination (Currently only support
            # bill against consumer project).
          "monitoredResource": "A String", # The monitored resource type. The type must be defined in
              # Service.monitored_resources section.
          "metrics": [ # Names of the metrics to report to this billing destination.
              # Each name must be defined in Service.metrics section.
            "A String",
          ],
        },
      ],
    },
    "title": "A String", # The product title for this service.
    "authentication": { # `Authentication` defines the authentication configuration for an API. # Auth configuration.
        #
        # Example for an API targeted for external use:
        #
        #     name: calendar.googleapis.com
        #     authentication:
        #       providers:
        #       - id: google_calendar_auth
        #         jwks_uri: https://www.googleapis.com/oauth2/v1/certs
        #         issuer: https://securetoken.google.com
        #       rules:
        #       - selector: "*"
        #         requirements:
        #           provider_id: google_calendar_auth
      "rules": [ # A list of authentication rules that apply to individual API methods.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # Authentication rules for the service.
            #
            # By default, if a method has any authentication requirements, every request
            # must include a valid credential matching one of the requirements.
            # It's an error to include more than one kind of credential in a single
            # request.
            #
            # If a method doesn't have any auth requirements, request credentials will be
            # ignored.
          "oauth": { # OAuth scopes are a way to define data and permissions on data. For example, # The requirements for OAuth credentials.
              # there are scopes defined for "Read-only access to Google Calendar" and
              # "Access to Cloud Platform". Users can consent to a scope for an application,
              # giving it permission to access that data on their behalf.
              #
              # OAuth scope specifications should be fairly coarse grained; a user will need
              # to see and understand the text description of what your scope means.
              #
              # In most cases: use one or at most two OAuth scopes for an entire family of
              # products. If your product has multiple APIs, you should probably be sharing
              # the OAuth scope across all of those APIs.
              #
              # When you need finer grained OAuth consent screens: talk with your product
              # management about how developers will use them in practice.
              #
              # Please note that even though each of the canonical scopes is enough for a
              # request to be accepted and passed to the backend, a request can still fail
              # due to the backend requiring additional scopes or permissions.
            "canonicalScopes": "A String", # The list of publicly documented OAuth scopes that are allowed access. An
                # OAuth token containing any of these scopes will be accepted.
                #
                # Example:
                #
                #      canonical_scopes: https://www.googleapis.com/auth/calendar,
                #                        https://www.googleapis.com/auth/calendar.read
          },
          "allowWithoutCredential": True or False, # If true, the service accepts API keys without any other credential.
          "requirements": [ # Requirements for additional authentication providers.
            { # User-defined authentication requirements, including support for
                # [JSON Web Token
                # (JWT)](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32).
              "providerId": "A String", # id from authentication provider.
                  #
                  # Example:
                  #
                  #     provider_id: bookstore_auth
              "audiences": "A String", # NOTE: This will be deprecated soon, once AuthProvider.audiences is
                  # implemented and accepted in all the runtime components.
                  #
                  # The list of JWT
                  # [audiences](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.3).
                  # that are allowed to access. A JWT containing any of these audiences will
                  # be accepted. When this setting is absent, only JWTs with audience
                  # "https://Service_name/API_name"
                  # will be accepted. For example, if no audiences are in the setting,
                  # LibraryService API will only accept JWTs with the following audience
                  # "https://library-example.googleapis.com/google.example.library.v1.LibraryService".
                  #
                  # Example:
                  #
                  #     audiences: bookstore_android.apps.googleusercontent.com,
                  #                bookstore_web.apps.googleusercontent.com
            },
          ],
          "selector": "A String", # Selects the methods to which this rule applies.
              #
              # Refer to selector for syntax details.
        },
      ],
      "providers": [ # Defines a set of authentication providers that a service supports.
        { # Configuration for an authentication provider, including support for
            # [JSON Web Token
            # (JWT)](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32).
          "jwksUri": "A String", # URL of the provider's public key set to validate signature of the JWT. See
              # [OpenID
              # Discovery](https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderMetadata).
              # Optional if the key set document:
              #  - can be retrieved from
              #    [OpenID
              #    Discovery](https://openid.net/specs/openid-connect-discovery-1_0.html of
              #    the issuer.
              #  - can be inferred from the email domain of the issuer (e.g. a Google
              #  service account).
              #
              # Example: https://www.googleapis.com/oauth2/v1/certs
          "audiences": "A String", # The list of JWT
              # [audiences](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.3).
              # that are allowed to access. A JWT containing any of these audiences will
              # be accepted. When this setting is absent, only JWTs with audience
              # "https://Service_name/API_name"
              # will be accepted. For example, if no audiences are in the setting,
              # LibraryService API will only accept JWTs with the following audience
              # "https://library-example.googleapis.com/google.example.library.v1.LibraryService".
              #
              # Example:
              #
              #     audiences: bookstore_android.apps.googleusercontent.com,
              #                bookstore_web.apps.googleusercontent.com
          "id": "A String", # The unique identifier of the auth provider. It will be referred to by
              # `AuthRequirement.provider_id`.
              #
              # Example: "bookstore_auth".
          "authorizationUrl": "A String", # Redirect URL if JWT token is required but not present or is expired.
              # Implement authorizationUrl of securityDefinitions in OpenAPI spec.
          "issuer": "A String", # Identifies the principal that issued the JWT. See
              # https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.1
              # Usually a URL or an email address.
              #
              # Example: https://securetoken.google.com
              # Example: 1234567-compute@developer.gserviceaccount.com
        },
      ],
    },
    "usage": { # Configuration controlling usage of a service. # Configuration controlling usage of this service.
      "rules": [ # A list of usage rules that apply to individual API methods.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # Usage configuration rules for the service.
            #
            # NOTE: Under development.
            #
            #
            # Use this rule to configure unregistered calls for the service. Unregistered
            # calls are calls that do not contain consumer project identity.
            # (Example: calls that do not contain an API key).
            # By default, API methods do not allow unregistered calls, and each method call
            # must be identified by a consumer project identity. Use this rule to
            # allow/disallow unregistered calls.
            #
            # Example of an API that wants to allow unregistered calls for entire service.
            #
            #     usage:
            #       rules:
            #       - selector: "*"
            #         allow_unregistered_calls: true
            #
            # Example of a method that wants to allow unregistered calls.
            #
            #     usage:
            #       rules:
            #       - selector: "google.example.library.v1.LibraryService.CreateBook"
            #         allow_unregistered_calls: true
          "skipServiceControl": True or False, # If true, the selected method should skip service control and the control
              # plane features, such as quota and billing, will not be available.
              # This flag is used by Google Cloud Endpoints to bypass checks for internal
              # methods, such as service health check methods.
          "allowUnregisteredCalls": True or False, # If true, the selected method allows unregistered calls, e.g. calls
              # that don't identify any user or application.
          "selector": "A String", # Selects the methods to which this rule applies. Use '*' to indicate all
              # methods in all APIs.
              #
              # Refer to selector for syntax details.
        },
      ],
      "producerNotificationChannel": "A String", # The full resource name of a channel used for sending notifications to the
          # service producer.
          #
          # Google Service Management currently only supports
          # [Google Cloud Pub/Sub](https://cloud.google.com/pubsub) as a notification
          # channel. To use Google Cloud Pub/Sub as the channel, this must be the name
          # of a Cloud Pub/Sub topic that uses the Cloud Pub/Sub topic name format
          # documented in https://cloud.google.com/pubsub/docs/overview.
      "requirements": [ # Requirements that must be satisfied before a consumer project can use the
          # service. Each requirement is of the form <service.name>/<requirement-id>;
          # for example 'serviceusage.googleapis.com/billing-enabled'.
        "A String",
      ],
    },
    "configVersion": 42, # The semantic version of the service configuration. The config version
        # affects the interpretation of the service configuration. For example,
        # certain features are enabled by default for certain config versions.
        # The latest config version is `3`.
    "producerProjectId": "A String", # The Google project that owns this service.
    "http": { # Defines the HTTP configuration for an API service. It contains a list of # HTTP configuration.
        # HttpRule, each specifying the mapping of an RPC method
        # to one or more HTTP REST API methods.
      "rules": [ # A list of HTTP configuration rules that apply to individual API methods.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # # gRPC Transcoding
            #
            # gRPC Transcoding is a feature for mapping between a gRPC method and one or
            # more HTTP REST endpoints. It allows developers to build a single API service
            # that supports both gRPC APIs and REST APIs. Many systems, including [Google
            # APIs](https://github.com/googleapis/googleapis),
            # [Cloud Endpoints](https://cloud.google.com/endpoints), [gRPC
            # Gateway](https://github.com/grpc-ecosystem/grpc-gateway),
            # and [Envoy](https://github.com/envoyproxy/envoy) proxy support this feature
            # and use it for large scale production services.
            #
            # `HttpRule` defines the schema of the gRPC/REST mapping. The mapping specifies
            # how different portions of the gRPC request message are mapped to the URL
            # path, URL query parameters, and HTTP request body. It also controls how the
            # gRPC response message is mapped to the HTTP response body. `HttpRule` is
            # typically specified as an `google.api.http` annotation on the gRPC method.
            #
            # Each mapping specifies a URL path template and an HTTP method. The path
            # template may refer to one or more fields in the gRPC request message, as long
            # as each field is a non-repeated field with a primitive (non-message) type.
            # The path template controls how fields of the request message are mapped to
            # the URL path.
            #
            # Example:
            #
            #     service Messaging {
            #       rpc GetMessage(GetMessageRequest) returns (Message) {
            #         option (google.api.http) = {
            #             get: "/v1/{name=messages/*}"
            #         };
            #       }
            #     }
            #     message GetMessageRequest {
            #       string name = 1; // Mapped to URL path.
            #     }
            #     message Message {
            #       string text = 1; // The resource content.
            #     }
            #
            # This enables an HTTP REST to gRPC mapping as below:
            #
            # HTTP | gRPC
            # -----|-----
            # `GET /v1/messages/123456`  | `GetMessage(name: "messages/123456")`
            #
            # Any fields in the request message which are not bound by the path template
            # automatically become HTTP query parameters if there is no HTTP request body.
            # For example:
            #
            #     service Messaging {
            #       rpc GetMessage(GetMessageRequest) returns (Message) {
            #         option (google.api.http) = {
            #             get:"/v1/messages/{message_id}"
            #         };
            #       }
            #     }
            #     message GetMessageRequest {
            #       message SubMessage {
            #         string subfield = 1;
            #       }
            #       string message_id = 1; // Mapped to URL path.
            #       int64 revision = 2;    // Mapped to URL query parameter `revision`.
            #       SubMessage sub = 3;    // Mapped to URL query parameter `sub.subfield`.
            #     }
            #
            # This enables a HTTP JSON to RPC mapping as below:
            #
            # HTTP | gRPC
            # -----|-----
            # `GET /v1/messages/123456?revision=2&sub.subfield=foo` |
            # `GetMessage(message_id: "123456" revision: 2 sub: SubMessage(subfield:
            # "foo"))`
            #
            # Note that fields which are mapped to URL query parameters must have a
            # primitive type or a repeated primitive type or a non-repeated message type.
            # In the case of a repeated type, the parameter can be repeated in the URL
            # as `...?param=A&param=B`. In the case of a message type, each field of the
            # message is mapped to a separate parameter, such as
            # `...?foo.a=A&foo.b=B&foo.c=C`.
            #
            # For HTTP methods that allow a request body, the `body` field
            # specifies the mapping. Consider a REST update method on the
            # message resource collection:
            #
            #     service Messaging {
            #       rpc UpdateMessage(UpdateMessageRequest) returns (Message) {
            #         option (google.api.http) = {
            #           patch: "/v1/messages/{message_id}"
            #           body: "message"
            #         };
            #       }
            #     }
            #     message UpdateMessageRequest {
            #       string message_id = 1; // mapped to the URL
            #       Message message = 2;   // mapped to the body
            #     }
            #
            # The following HTTP JSON to RPC mapping is enabled, where the
            # representation of the JSON in the request body is determined by
            # protos JSON encoding:
            #
            # HTTP | gRPC
            # -----|-----
            # `PATCH /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id:
            # "123456" message { text: "Hi!" })`
            #
            # The special name `*` can be used in the body mapping to define that
            # every field not bound by the path template should be mapped to the
            # request body.  This enables the following alternative definition of
            # the update method:
            #
            #     service Messaging {
            #       rpc UpdateMessage(Message) returns (Message) {
            #         option (google.api.http) = {
            #           patch: "/v1/messages/{message_id}"
            #           body: "*"
            #         };
            #       }
            #     }
            #     message Message {
            #       string message_id = 1;
            #       string text = 2;
            #     }
            #
            #
            # The following HTTP JSON to RPC mapping is enabled:
            #
            # HTTP | gRPC
            # -----|-----
            # `PATCH /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id:
            # "123456" text: "Hi!")`
            #
            # Note that when using `*` in the body mapping, it is not possible to
            # have HTTP parameters, as all fields not bound by the path end in
            # the body. This makes this option more rarely used in practice when
            # defining REST APIs. The common usage of `*` is in custom methods
            # which don't use the URL at all for transferring data.
            #
            # It is possible to define multiple HTTP methods for one RPC by using
            # the `additional_bindings` option. Example:
            #
            #     service Messaging {
            #       rpc GetMessage(GetMessageRequest) returns (Message) {
            #         option (google.api.http) = {
            #           get: "/v1/messages/{message_id}"
            #           additional_bindings {
            #             get: "/v1/users/{user_id}/messages/{message_id}"
            #           }
            #         };
            #       }
            #     }
            #     message GetMessageRequest {
            #       string message_id = 1;
            #       string user_id = 2;
            #     }
            #
            # This enables the following two alternative HTTP JSON to RPC mappings:
            #
            # HTTP | gRPC
            # -----|-----
            # `GET /v1/messages/123456` | `GetMessage(message_id: "123456")`
            # `GET /v1/users/me/messages/123456` | `GetMessage(user_id: "me" message_id:
            # "123456")`
            #
            # ## Rules for HTTP mapping
            #
            # 1. Leaf request fields (recursive expansion nested messages in the request
            #    message) are classified into three categories:
            #    - Fields referred by the path template. They are passed via the URL path.
            #    - Fields referred by the HttpRule.body. They are passed via the HTTP
            #      request body.
            #    - All other fields are passed via the URL query parameters, and the
            #      parameter name is the field path in the request message. A repeated
            #      field can be represented as multiple query parameters under the same
            #      name.
            #  2. If HttpRule.body is "*", there is no URL query parameter, all fields
            #     are passed via URL path and HTTP request body.
            #  3. If HttpRule.body is omitted, there is no HTTP request body, all
            #     fields are passed via URL path and URL query parameters.
            #
            # ### Path template syntax
            #
            #     Template = "/" Segments [ Verb ] ;
            #     Segments = Segment { "/" Segment } ;
            #     Segment  = "*" | "**" | LITERAL | Variable ;
            #     Variable = "{" FieldPath [ "=" Segments ] "}" ;
            #     FieldPath = IDENT { "." IDENT } ;
            #     Verb     = ":" LITERAL ;
            #
            # The syntax `*` matches a single URL path segment. The syntax `**` matches
            # zero or more URL path segments, which must be the last part of the URL path
            # except the `Verb`.
            #
            # The syntax `Variable` matches part of the URL path as specified by its
            # template. A variable template must not contain other variables. If a variable
            # matches a single path segment, its template may be omitted, e.g. `{var}`
            # is equivalent to `{var=*}`.
            #
            # The syntax `LITERAL` matches literal text in the URL path. If the `LITERAL`
            # contains any reserved character, such characters should be percent-encoded
            # before the matching.
            #
            # If a variable contains exactly one path segment, such as `"{var}"` or
            # `"{var=*}"`, when such a variable is expanded into a URL path on the client
            # side, all characters except `[-_.~0-9a-zA-Z]` are percent-encoded. The
            # server side does the reverse decoding. Such variables show up in the
            # [Discovery
            # Document](https://developers.google.com/discovery/v1/reference/apis) as
            # `{var}`.
            #
            # If a variable contains multiple path segments, such as `"{var=foo/*}"`
            # or `"{var=**}"`, when such a variable is expanded into a URL path on the
            # client side, all characters except `[-_.~/0-9a-zA-Z]` are percent-encoded.
            # The server side does the reverse decoding, except "%2F" and "%2f" are left
            # unchanged. Such variables show up in the
            # [Discovery
            # Document](https://developers.google.com/discovery/v1/reference/apis) as
            # `{+var}`.
            #
            # ## Using gRPC API Service Configuration
            #
            # gRPC API Service Configuration (service config) is a configuration language
            # for configuring a gRPC service to become a user-facing product. The
            # service config is simply the YAML representation of the `google.api.Service`
            # proto message.
            #
            # As an alternative to annotating your proto file, you can configure gRPC
            # transcoding in your service config YAML files. You do this by specifying a
            # `HttpRule` that maps the gRPC method to a REST endpoint, achieving the same
            # effect as the proto annotation. This can be particularly useful if you
            # have a proto that is reused in multiple services. Note that any transcoding
            # specified in the service config will override any matching transcoding
            # configuration in the proto.
            #
            # Example:
            #
            #     http:
            #       rules:
            #         # Selects a gRPC method and applies HttpRule to it.
            #         - selector: example.v1.Messaging.GetMessage
            #           get: /v1/messages/{message_id}/{sub.subfield}
            #
            # ## Special notes
            #
            # When gRPC Transcoding is used to map a gRPC to JSON REST endpoints, the
            # proto to JSON conversion must follow the [proto3
            # specification](https://developers.google.com/protocol-buffers/docs/proto3#json).
            #
            # While the single segment variable follows the semantics of
            # [RFC 6570](https://tools.ietf.org/html/rfc6570) Section 3.2.2 Simple String
            # Expansion, the multi segment variable **does not** follow RFC 6570 Section
            # 3.2.3 Reserved Expansion. The reason is that the Reserved Expansion
            # does not expand special characters like `?` and `#`, which would lead
            # to invalid URLs. As the result, gRPC Transcoding uses a custom encoding
            # for multi segment variables.
            #
            # The path variables **must not** refer to any repeated or mapped field,
            # because client libraries are not capable of handling such variable expansion.
            #
            # The path variables **must not** capture the leading "/" character. The reason
            # is that the most common use case "{var}" does not capture the leading "/"
            # character. For consistency, all path variables must share the same behavior.
            #
            # Repeated message fields must not be mapped to URL query parameters, because
            # no client library can support such complicated mapping.
            #
            # If an API needs to use a JSON array for request or response body, it can map
            # the request or response body to a repeated field. However, some gRPC
            # Transcoding implementations may not support this feature.
          "body": "A String", # The name of the request field whose value is mapped to the HTTP request
              # body, or `*` for mapping all request fields not captured by the path
              # pattern to the HTTP body, or omitted for not having any HTTP request body.
              #
              # NOTE: the referred field must be present at the top-level of the request
              # message type.
          "additionalBindings": [ # Additional HTTP bindings for the selector. Nested bindings must
              # not contain an `additional_bindings` field themselves (that is,
              # the nesting may only be one level deep).
            # Object with schema name: HttpRule
          ],
          "get": "A String", # Maps to HTTP GET. Used for listing and getting information about
              # resources.
          "patch": "A String", # Maps to HTTP PATCH. Used for updating a resource.
          "custom": { # A custom pattern is used for defining custom HTTP verb. # The custom pattern is used for specifying an HTTP method that is not
              # included in the `pattern` field, such as HEAD, or "*" to leave the
              # HTTP method unspecified for this rule. The wild-card rule is useful
              # for services that provide content to Web (HTML) clients.
            "path": "A String", # The path matched by this custom verb.
            "kind": "A String", # The name of this custom HTTP verb.
          },
          "responseBody": "A String", # Optional. The name of the response field whose value is mapped to the HTTP
              # response body. When omitted, the entire response message will be used
              # as the HTTP response body.
              #
              # NOTE: The referred field must be present at the top-level of the response
              # message type.
          "put": "A String", # Maps to HTTP PUT. Used for replacing a resource.
          "post": "A String", # Maps to HTTP POST. Used for creating a resource or performing an action.
          "selector": "A String", # Selects a method to which this rule applies.
              #
              # Refer to selector for syntax details.
          "delete": "A String", # Maps to HTTP DELETE. Used for deleting a resource.
        },
      ],
      "fullyDecodeReservedExpansion": True or False, # When set to true, URL path parameters will be fully URI-decoded except in
          # cases of single segment matches in reserved expansion, where "%2F" will be
          # left encoded.
          #
          # The default behavior is to not decode RFC 6570 reserved characters in multi
          # segment matches.
    },
    "apis": [ # A list of API interfaces exported by this service. Only the `name` field
        # of the google.protobuf.Api needs to be provided by the configuration
        # author, as the remaining fields will be derived from the IDL during the
        # normalization process. It is an error to specify an API interface here
        # which cannot be resolved against the associated IDL files.
      { # Api is a light-weight descriptor for an API Interface.
          #
          # Interfaces are also described as "protocol buffer services" in some contexts,
          # such as by the "service" keyword in a .proto file, but they are different
          # from API Services, which represent a concrete implementation of an interface
          # as opposed to simply a description of methods and bindings. They are also
          # sometimes simply referred to as "APIs" in other contexts, such as the name of
          # this message itself. See https://cloud.google.com/apis/design/glossary for
          # detailed terminology.
        "methods": [ # The methods of this interface, in unspecified order.
          { # Method represents a method of an API interface.
            "name": "A String", # The simple name of this method.
            "requestStreaming": True or False, # If true, the request is streamed.
            "responseTypeUrl": "A String", # The URL of the output message type.
            "requestTypeUrl": "A String", # A URL of the input message type.
            "responseStreaming": True or False, # If true, the response is streamed.
            "syntax": "A String", # The source syntax of this method.
            "options": [ # Any metadata attached to the method.
              { # A protocol buffer option, which can be attached to a message, field,
                  # enumeration, etc.
                "name": "A String", # The option's name. For protobuf built-in options (options defined in
                    # descriptor.proto), this is the short name. For example, `"map_entry"`.
                    # For custom options, it should be the fully-qualified name. For example,
                    # `"google.api.http"`.
                "value": { # The option's value packed in an Any message. If the value is a primitive,
                    # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                    # should be used. If the value is an enum, it should be stored as an int32
                    # value using the google.protobuf.Int32Value type.
                  "a_key": "", # Properties of the object. Contains field @type with type URL.
                },
              },
            ],
          },
        ],
        "sourceContext": { # `SourceContext` represents information about the source of a # Source context for the protocol buffer service represented by this
            # message.
            # protobuf element, like the file in which it is defined.
          "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
              # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
        },
        "mixins": [ # Included interfaces. See Mixin.
          { # Declares an API Interface to be included in this interface. The including
              # interface must redeclare all the methods from the included interface, but
              # documentation and options are inherited as follows:
              #
              # - If after comment and whitespace stripping, the documentation
              #   string of the redeclared method is empty, it will be inherited
              #   from the original method.
              #
              # - Each annotation belonging to the service config (http,
              #   visibility) which is not set in the redeclared method will be
              #   inherited.
              #
              # - If an http annotation is inherited, the path pattern will be
              #   modified as follows. Any version prefix will be replaced by the
              #   version of the including interface plus the root path if
              #   specified.
              #
              # Example of a simple mixin:
              #
              #     package google.acl.v1;
              #     service AccessControl {
              #       // Get the underlying ACL object.
              #       rpc GetAcl(GetAclRequest) returns (Acl) {
              #         option (google.api.http).get = "/v1/{resource=**}:getAcl";
              #       }
              #     }
              #
              #     package google.storage.v2;
              #     service Storage {
              #       //       rpc GetAcl(GetAclRequest) returns (Acl);
              #
              #       // Get a data record.
              #       rpc GetData(GetDataRequest) returns (Data) {
              #         option (google.api.http).get = "/v2/{resource=**}";
              #       }
              #     }
              #
              # Example of a mixin configuration:
              #
              #     apis:
              #     - name: google.storage.v2.Storage
              #       mixins:
              #       - name: google.acl.v1.AccessControl
              #
              # The mixin construct implies that all methods in `AccessControl` are
              # also declared with same name and request/response types in
              # `Storage`. A documentation generator or annotation processor will
              # see the effective `Storage.GetAcl` method after inherting
              # documentation and annotations as follows:
              #
              #     service Storage {
              #       // Get the underlying ACL object.
              #       rpc GetAcl(GetAclRequest) returns (Acl) {
              #         option (google.api.http).get = "/v2/{resource=**}:getAcl";
              #       }
              #       ...
              #     }
              #
              # Note how the version in the path pattern changed from `v1` to `v2`.
              #
              # If the `root` field in the mixin is specified, it should be a
              # relative path under which inherited HTTP paths are placed. Example:
              #
              #     apis:
              #     - name: google.storage.v2.Storage
              #       mixins:
              #       - name: google.acl.v1.AccessControl
              #         root: acls
              #
              # This implies the following inherited HTTP annotation:
              #
              #     service Storage {
              #       // Get the underlying ACL object.
              #       rpc GetAcl(GetAclRequest) returns (Acl) {
              #         option (google.api.http).get = "/v2/acls/{resource=**}:getAcl";
              #       }
              #       ...
              #     }
            "root": "A String", # If non-empty specifies a path under which inherited HTTP paths
                # are rooted.
            "name": "A String", # The fully qualified name of the interface which is included.
          },
        ],
        "syntax": "A String", # The source syntax of the service.
        "version": "A String", # A version string for this interface. If specified, must have the form
            # `major-version.minor-version`, as in `1.10`. If the minor version is
            # omitted, it defaults to zero. If the entire version field is empty, the
            # major version is derived from the package name, as outlined below. If the
            # field is not empty, the version in the package name will be verified to be
            # consistent with what is provided here.
            #
            # The versioning schema uses [semantic
            # versioning](http://semver.org) where the major version number
            # indicates a breaking change and the minor version an additive,
            # non-breaking change. Both version numbers are signals to users
            # what to expect from different versions, and should be carefully
            # chosen based on the product plan.
            #
            # The major version is also reflected in the package name of the
            # interface, which must end in `v<major-version>`, as in
            # `google.feature.v1`. For major versions 0 and 1, the suffix can
            # be omitted. Zero major versions must only be used for
            # experimental, non-GA interfaces.
        "options": [ # Any metadata attached to the interface.
          { # A protocol buffer option, which can be attached to a message, field,
              # enumeration, etc.
            "name": "A String", # The option's name. For protobuf built-in options (options defined in
                # descriptor.proto), this is the short name. For example, `"map_entry"`.
                # For custom options, it should be the fully-qualified name. For example,
                # `"google.api.http"`.
            "value": { # The option's value packed in an Any message. If the value is a primitive,
                # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                # should be used. If the value is an enum, it should be stored as an int32
                # value using the google.protobuf.Int32Value type.
              "a_key": "", # Properties of the object. Contains field @type with type URL.
            },
          },
        ],
        "name": "A String", # The fully qualified name of this interface, including package name
            # followed by the interface's simple name.
      },
    ],
    "customError": { # Customize service error responses.  For example, list any service # Custom error configuration.
        # specific protobuf types that can appear in error detail lists of
        # error responses.
        #
        # Example:
        #
        #     custom_error:
        #       types:
        #       - google.foo.v1.CustomError
        #       - google.foo.v1.AnotherError
      "rules": [ # The list of custom error rules that apply to individual API messages.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # A custom error rule.
          "isErrorType": True or False, # Mark this message as possible payload in error response.  Otherwise,
              # objects of this type will be filtered when they appear in error payload.
          "selector": "A String", # Selects messages to which this rule applies.
              #
              # Refer to selector for syntax details.
        },
      ],
      "types": [ # The list of custom error detail types, e.g. 'google.foo.v1.CustomError'.
        "A String",
      ],
    },
    "quota": { # Quota configuration helps to achieve fairness and budgeting in service # Quota configuration.
        # usage.
        #
        # The metric based quota configuration works this way:
        # - The service configuration defines a set of metrics.
        # - For API calls, the quota.metric_rules maps methods to metrics with
        #   corresponding costs.
        # - The quota.limits defines limits on the metrics, which will be used for
        #   quota checks at runtime.
        #
        # An example quota configuration in yaml format:
        #
        #    quota:
        #      limits:
        #
        #      - name: apiWriteQpsPerProject
        #        metric: library.googleapis.com/write_calls
        #        unit: "1/min/{project}"  # rate limit for consumer projects
        #        values:
        #          STANDARD: 10000
        #
        #
        #      # The metric rules bind all methods to the read_calls metric,
        #      # except for the UpdateBook and DeleteBook methods. These two methods
        #      # are mapped to the write_calls metric, with the UpdateBook method
        #      # consuming at twice rate as the DeleteBook method.
        #      metric_rules:
        #      - selector: "*"
        #        metric_costs:
        #          library.googleapis.com/read_calls: 1
        #      - selector: google.example.library.v1.LibraryService.UpdateBook
        #        metric_costs:
        #          library.googleapis.com/write_calls: 2
        #      - selector: google.example.library.v1.LibraryService.DeleteBook
        #        metric_costs:
        #          library.googleapis.com/write_calls: 1
        #
        #  Corresponding Metric definition:
        #
        #      metrics:
        #      - name: library.googleapis.com/read_calls
        #        display_name: Read requests
        #        metric_kind: DELTA
        #        value_type: INT64
        #
        #      - name: library.googleapis.com/write_calls
        #        display_name: Write requests
        #        metric_kind: DELTA
        #        value_type: INT64
        #
      "metricRules": [ # List of `MetricRule` definitions, each one mapping a selected method to one
          # or more metrics.
        { # Bind API methods to metrics. Binding a method to a metric causes that
            # metric's configured quota behaviors to apply to the method call.
          "metricCosts": { # Metrics to update when the selected methods are called, and the associated
              # cost applied to each metric.
              #
              # The key of the map is the metric name, and the values are the amount
              # increased for the metric against which the quota limits are defined.
              # The value must not be negative.
            "a_key": "A String",
          },
          "selector": "A String", # Selects the methods to which this rule applies.
              #
              # Refer to selector for syntax details.
        },
      ],
      "limits": [ # List of `QuotaLimit` definitions for the service.
        { # `QuotaLimit` defines a specific limit that applies over a specified duration
            # for a limit type. There can be at most one limit for a duration and limit
            # type combination defined within a `QuotaGroup`.
          "displayName": "A String", # User-visible display name for this limit.
              # Optional. If not set, the UI will provide a default display name based on
              # the quota configuration. This field can be used to override the default
              # display name generated from the configuration.
          "name": "A String", # Name of the quota limit.
              #
              # The name must be provided, and it must be unique within the service. The
              # name can only include alphanumeric characters as well as '-'.
              #
              # The maximum length of the limit name is 64 characters.
          "defaultLimit": "A String", # Default number of tokens that can be consumed during the specified
              # duration. This is the number of tokens assigned when a client
              # application developer activates the service for his/her project.
              #
              # Specifying a value of 0 will block all requests. This can be used if you
              # are provisioning quota to selected consumers and blocking others.
              # Similarly, a value of -1 will indicate an unlimited quota. No other
              # negative values are allowed.
              #
              # Used by group-based quotas only.
          "metric": "A String", # The name of the metric this quota limit applies to. The quota limits with
              # the same metric will be checked together during runtime. The metric must be
              # defined within the service config.
          "values": { # Tiered limit values. You must specify this as a key:value pair, with an
              # integer value that is the maximum number of requests allowed for the
              # specified unit. Currently only STANDARD is supported.
            "a_key": "A String",
          },
          "maxLimit": "A String", # Maximum number of tokens that can be consumed during the specified
              # duration. Client application developers can override the default limit up
              # to this maximum. If specified, this value cannot be set to a value less
              # than the default limit. If not specified, it is set to the default limit.
              #
              # To allow clients to apply overrides with no upper bound, set this to -1,
              # indicating unlimited maximum quota.
              #
              # Used by group-based quotas only.
          "duration": "A String", # Duration of this limit in textual notation. Example: "100s", "24h", "1d".
              # For duration longer than a day, only multiple of days is supported. We
              # support only "100s" and "1d" for now. Additional support will be added in
              # the future. "0" indicates indefinite duration.
              #
              # Used by group-based quotas only.
          "freeTier": "A String", # Free tier value displayed in the Developers Console for this limit.
              # The free tier is the number of tokens that will be subtracted from the
              # billed amount when billing is enabled.
              # This field can only be set on a limit with duration "1d", in a billable
              # group; it is invalid on any other limit. If this field is not set, it
              # defaults to 0, indicating that there is no free tier for this service.
              #
              # Used by group-based quotas only.
          "unit": "A String", # Specify the unit of the quota limit. It uses the same syntax as
              # Metric.unit. The supported unit kinds are determined by the quota
              # backend system.
              #
              # Here are some examples:
              # * "1/min/{project}" for quota per minute per project.
              #
              # Note: the order of unit components is insignificant.
              # The "1" at the beginning is required to follow the metric unit syntax.
          "description": "A String", # Optional. User-visible, extended description for this quota limit.
              # Should be used only when more context is needed to understand this limit
              # than provided by the limit's display name (see: `display_name`).
        },
      ],
    },
    "metrics": [ # Defines the metrics used by this service.
      { # Defines a metric type and its schema. Once a metric descriptor is created,
          # deleting or altering it stops data collection and makes the metric type's
          # existing data unusable.
        "description": "A String", # A detailed description of the metric, which can be used in documentation.
        "displayName": "A String", # A concise name for the metric, which can be displayed in user interfaces.
            # Use sentence case without an ending period, for example "Request count".
            # This field is optional but it is recommended to be set for any metrics
            # associated with user-visible concepts, such as Quota.
        "name": "A String", # The resource name of the metric descriptor.
        "metricKind": "A String", # Whether the metric records instantaneous values, changes to a value, etc.
            # Some combinations of `metric_kind` and `value_type` might not be supported.
        "valueType": "A String", # Whether the measurement is an integer, a floating-point number, etc.
            # Some combinations of `metric_kind` and `value_type` might not be supported.
        "labels": [ # The set of labels that can be used to describe a specific
            # instance of this metric type. For example, the
            # `appengine.googleapis.com/http/server/response_latencies` metric
            # type has a label for the HTTP response code, `response_code`, so
            # you can look at latencies for successful responses or just
            # for responses that failed.
          { # A description of a label.
            "valueType": "A String", # The type of data that can be assigned to the label.
            "description": "A String", # A human-readable description for the label.
            "key": "A String", # The label key.
          },
        ],
        "launchStage": "A String", # Optional. The launch stage of the metric definition.
        "type": "A String", # The metric type, including its DNS name prefix. The type is not
            # URL-encoded.  All user-defined metric types have the DNS name
            # `custom.googleapis.com` or `external.googleapis.com`.  Metric types should
            # use a natural hierarchical grouping. For example:
            #
            #     "custom.googleapis.com/invoice/paid/amount"
            #     "external.googleapis.com/prometheus/up"
            #     "appengine.googleapis.com/http/server/response_latencies"
        "unit": "A String", # The unit in which the metric value is reported. It is only applicable
            # if the `value_type` is `INT64`, `DOUBLE`, or `DISTRIBUTION`. The
            # supported units are a subset of [The Unified Code for Units of
            # Measure](http://unitsofmeasure.org/ucum.html) standard:
            #
            # **Basic units (UNIT)**
            #
            # * `bit`   bit
            # * `By`    byte
            # * `s`     second
            # * `min`   minute
            # * `h`     hour
            # * `d`     day
            #
            # **Prefixes (PREFIX)**
            #
            # * `k`     kilo    (10**3)
            # * `M`     mega    (10**6)
            # * `G`     giga    (10**9)
            # * `T`     tera    (10**12)
            # * `P`     peta    (10**15)
            # * `E`     exa     (10**18)
            # * `Z`     zetta   (10**21)
            # * `Y`     yotta   (10**24)
            # * `m`     milli   (10**-3)
            # * `u`     micro   (10**-6)
            # * `n`     nano    (10**-9)
            # * `p`     pico    (10**-12)
            # * `f`     femto   (10**-15)
            # * `a`     atto    (10**-18)
            # * `z`     zepto   (10**-21)
            # * `y`     yocto   (10**-24)
            # * `Ki`    kibi    (2**10)
            # * `Mi`    mebi    (2**20)
            # * `Gi`    gibi    (2**30)
            # * `Ti`    tebi    (2**40)
            #
            # **Grammar**
            #
            # The grammar also includes these connectors:
            #
            # * `/`    division (as an infix operator, e.g. `1/s`).
            # * `.`    multiplication (as an infix operator, e.g. `GBy.d`)
            #
            # The grammar for a unit is as follows:
            #
            #     Expression = Component { "." Component } { "/" Component } ;
            #
            #     Component = ( [ PREFIX ] UNIT | "%" ) [ Annotation ]
            #               | Annotation
            #               | "1"
            #               ;
            #
            #     Annotation = "{" NAME "}" ;
            #
            # Notes:
            #
            # * `Annotation` is just a comment if it follows a `UNIT` and is
            #    equivalent to `1` if it is used alone. For examples,
            #    `{requests}/s == 1/s`, `By{transmitted}/s == By/s`.
            # * `NAME` is a sequence of non-blank printable ASCII characters not
            #    containing '{' or '}'.
            # * `1` represents dimensionless value 1, such as in `1/s`.
            # * `%` represents dimensionless value 1/100, and annotates values giving
            #    a percentage.
        "metadata": { # Additional annotations that can be used to guide the usage of a metric. # Optional. Metadata which can be used to guide usage of the metric.
          "launchStage": "A String", # Deprecated. Please use the MetricDescriptor.launch_stage instead.
              # The launch stage of the metric definition.
          "ingestDelay": "A String", # The delay of data points caused by ingestion. Data points older than this
              # age are guaranteed to be ingested and available to be read, excluding
              # data loss due to errors.
          "samplePeriod": "A String", # The sampling period of metric data points. For metrics which are written
              # periodically, consecutive data points are stored at this time interval,
              # excluding data loss due to errors. Metrics with a higher granularity have
              # a smaller sampling period.
        },
      },
    ],
    "enums": [ # A list of all enum types included in this API service.  Enums
        # referenced directly or indirectly by the `apis` are automatically
        # included.  Enums which are not referenced but shall be included
        # should be listed here by name. Example:
        #
        #     enums:
        #     - name: google.someapi.v1.SomeEnum
      { # Enum type definition.
        "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
            # protobuf element, like the file in which it is defined.
          "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
              # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
        },
        "enumvalue": [ # Enum value definitions.
          { # Enum value definition.
            "options": [ # Protocol buffer options.
              { # A protocol buffer option, which can be attached to a message, field,
                  # enumeration, etc.
                "name": "A String", # The option's name. For protobuf built-in options (options defined in
                    # descriptor.proto), this is the short name. For example, `"map_entry"`.
                    # For custom options, it should be the fully-qualified name. For example,
                    # `"google.api.http"`.
                "value": { # The option's value packed in an Any message. If the value is a primitive,
                    # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                    # should be used. If the value is an enum, it should be stored as an int32
                    # value using the google.protobuf.Int32Value type.
                  "a_key": "", # Properties of the object. Contains field @type with type URL.
                },
              },
            ],
            "name": "A String", # Enum value name.
            "number": 42, # Enum value number.
          },
        ],
        "options": [ # Protocol buffer options.
          { # A protocol buffer option, which can be attached to a message, field,
              # enumeration, etc.
            "name": "A String", # The option's name. For protobuf built-in options (options defined in
                # descriptor.proto), this is the short name. For example, `"map_entry"`.
                # For custom options, it should be the fully-qualified name. For example,
                # `"google.api.http"`.
            "value": { # The option's value packed in an Any message. If the value is a primitive,
                # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                # should be used. If the value is an enum, it should be stored as an int32
                # value using the google.protobuf.Int32Value type.
              "a_key": "", # Properties of the object. Contains field @type with type URL.
            },
          },
        ],
        "name": "A String", # Enum type name.
        "syntax": "A String", # The source syntax.
      },
    ],
    "types": [ # A list of all proto message types included in this API service.
        # Types referenced directly or indirectly by the `apis` are
        # automatically included.  Messages which are not referenced but
        # shall be included, such as types used by the `google.protobuf.Any` type,
        # should be listed here by name. Example:
        #
        #     types:
        #     - name: google.protobuf.Int32
      { # A protocol buffer message type.
        "oneofs": [ # The list of types appearing in `oneof` definitions in this type.
          "A String",
        ],
        "name": "A String", # The fully qualified message name.
        "fields": [ # The list of fields.
          { # A single field of a message type.
            "kind": "A String", # The field type.
            "oneofIndex": 42, # The index of the field type in `Type.oneofs`, for message or enumeration
                # types. The first type has index 1; zero means the type is not in the list.
            "typeUrl": "A String", # The field type URL, without the scheme, for message or enumeration
                # types. Example: `"type.googleapis.com/google.protobuf.Timestamp"`.
            "name": "A String", # The field name.
            "defaultValue": "A String", # The string value of the default value of this field. Proto2 syntax only.
            "jsonName": "A String", # The field JSON name.
            "number": 42, # The field number.
            "cardinality": "A String", # The field cardinality.
            "options": [ # The protocol buffer options.
              { # A protocol buffer option, which can be attached to a message, field,
                  # enumeration, etc.
                "name": "A String", # The option's name. For protobuf built-in options (options defined in
                    # descriptor.proto), this is the short name. For example, `"map_entry"`.
                    # For custom options, it should be the fully-qualified name. For example,
                    # `"google.api.http"`.
                "value": { # The option's value packed in an Any message. If the value is a primitive,
                    # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                    # should be used. If the value is an enum, it should be stored as an int32
                    # value using the google.protobuf.Int32Value type.
                  "a_key": "", # Properties of the object. Contains field @type with type URL.
                },
              },
            ],
            "packed": True or False, # Whether to use alternative packed wire representation.
          },
        ],
        "syntax": "A String", # The source syntax.
        "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
            # protobuf element, like the file in which it is defined.
          "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
              # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
        },
        "options": [ # The protocol buffer options.
          { # A protocol buffer option, which can be attached to a message, field,
              # enumeration, etc.
            "name": "A String", # The option's name. For protobuf built-in options (options defined in
                # descriptor.proto), this is the short name. For example, `"map_entry"`.
                # For custom options, it should be the fully-qualified name. For example,
                # `"google.api.http"`.
            "value": { # The option's value packed in an Any message. If the value is a primitive,
                # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                # should be used. If the value is an enum, it should be stored as an int32
                # value using the google.protobuf.Int32Value type.
              "a_key": "", # Properties of the object. Contains field @type with type URL.
            },
          },
        ],
      },
    ],
    "logging": { # Logging configuration of the service. # Logging configuration.
        #
        # The following example shows how to configure logs to be sent to the
        # producer and consumer projects. In the example, the `activity_history`
        # log is sent to both the producer and consumer projects, whereas the
        # `purchase_history` log is only sent to the producer project.
        #
        #     monitored_resources:
        #     - type: library.googleapis.com/branch
        #       labels:
        #       - key: /city
        #         description: The city where the library branch is located in.
        #       - key: /name
        #         description: The name of the branch.
        #     logs:
        #     - name: activity_history
        #       labels:
        #       - key: /customer_id
        #     - name: purchase_history
        #     logging:
        #       producer_destinations:
        #       - monitored_resource: library.googleapis.com/branch
        #         logs:
        #         - activity_history
        #         - purchase_history
        #       consumer_destinations:
        #       - monitored_resource: library.googleapis.com/branch
        #         logs:
        #         - activity_history
      "producerDestinations": [ # Logging configurations for sending logs to the producer project.
          # There can be multiple producer destinations, each one must have a
          # different monitored resource type. A log can be used in at most
          # one producer destination.
        { # Configuration of a specific logging destination (the producer project
            # or the consumer project).
          "monitoredResource": "A String", # The monitored resource type. The type must be defined in the
              # Service.monitored_resources section.
          "logs": [ # Names of the logs to be sent to this destination. Each name must
              # be defined in the Service.logs section. If the log name is
              # not a domain scoped name, it will be automatically prefixed with
              # the service name followed by "/".
            "A String",
          ],
        },
      ],
      "consumerDestinations": [ # Logging configurations for sending logs to the consumer project.
          # There can be multiple consumer destinations, each one must have a
          # different monitored resource type. A log can be used in at most
          # one consumer destination.
        { # Configuration of a specific logging destination (the producer project
            # or the consumer project).
          "monitoredResource": "A String", # The monitored resource type. The type must be defined in the
              # Service.monitored_resources section.
          "logs": [ # Names of the logs to be sent to this destination. Each name must
              # be defined in the Service.logs section. If the log name is
              # not a domain scoped name, it will be automatically prefixed with
              # the service name followed by "/".
            "A String",
          ],
        },
      ],
    },
    "name": "A String", # The service name, which is a DNS-like logical identifier for the
        # service, such as `calendar.googleapis.com`. The service name
        # typically goes through DNS verification to make sure the owner
        # of the service also owns the DNS name.
    "documentation": { # `Documentation` provides the information for describing a service. # Additional API documentation.
        #
        # Example:
        # <pre><code>documentation:
        #   summary: >
        #     The Google Calendar API gives access
        #     to most calendar features.
        #   pages:
        #   - name: Overview
        #     content: &#40;== include google/foo/overview.md ==&#41;
        #   - name: Tutorial
        #     content: &#40;== include google/foo/tutorial.md ==&#41;
        #     subpages;
        #     - name: Java
        #       content: &#40;== include google/foo/tutorial_java.md ==&#41;
        #   rules:
        #   - selector: google.calendar.Calendar.Get
        #     description: >
        #       ...
        #   - selector: google.calendar.Calendar.Put
        #     description: >
        #       ...
        # </code></pre>
        # Documentation is provided in markdown syntax. In addition to
        # standard markdown features, definition lists, tables and fenced
        # code blocks are supported. Section headers can be provided and are
        # interpreted relative to the section nesting of the context where
        # a documentation fragment is embedded.
        #
        # Documentation from the IDL is merged with documentation defined
        # via the config at normalization time, where documentation provided
        # by config rules overrides IDL provided.
        #
        # A number of constructs specific to the API platform are supported
        # in documentation text.
        #
        # In order to reference a proto element, the following
        # notation can be used:
        # <pre><code>&#91;fully.qualified.proto.name]&#91;]</code></pre>
        # To override the display text used for the link, this can be used:
        # <pre><code>&#91;display text]&#91;fully.qualified.proto.name]</code></pre>
        # Text can be excluded from doc using the following notation:
        # <pre><code>&#40;-- internal comment --&#41;</code></pre>
        #
        # A few directives are available in documentation. Note that
        # directives must appear on a single line to be properly
        # identified. The `include` directive includes a markdown file from
        # an external source:
        # <pre><code>&#40;== include path/to/file ==&#41;</code></pre>
        # The `resource_for` directive marks a message to be the resource of
        # a collection in REST view. If it is not specified, tools attempt
        # to infer the resource from the operations in a collection:
        # <pre><code>&#40;== resource_for v1.shelves.books ==&#41;</code></pre>
        # The directive `suppress_warning` does not directly affect documentation
        # and is documented together with service config validation.
      "rules": [ # A list of documentation rules that apply to individual API elements.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # A documentation rule provides information about individual API elements.
          "description": "A String", # Description of the selected API(s).
          "deprecationDescription": "A String", # Deprecation description of the selected element(s). It can be provided if
              # an element is marked as `deprecated`.
          "selector": "A String", # The selector is a comma-separated list of patterns. Each pattern is a
              # qualified name of the element which may end in "*", indicating a wildcard.
              # Wildcards are only allowed at the end and for a whole component of the
              # qualified name, i.e. "foo.*" is ok, but not "foo.b*" or "foo.*.bar". A
              # wildcard will match one or more components. To specify a default for all
              # applicable elements, the whole pattern "*" is used.
        },
      ],
      "documentationRootUrl": "A String", # The URL to the root of documentation.
      "overview": "A String", # Declares a single overview page. For example:
          # <pre><code>documentation:
          #   summary: ...
          #   overview: &#40;== include overview.md ==&#41;
          # </code></pre>
          # This is a shortcut for the following declaration (using pages style):
          # <pre><code>documentation:
          #   summary: ...
          #   pages:
          #   - name: Overview
          #     content: &#40;== include overview.md ==&#41;
          # </code></pre>
          # Note: you cannot specify both `overview` field and `pages` field.
      "pages": [ # The top level pages for the documentation set.
        { # Represents a documentation page. A page can contain subpages to represent
            # nested documentation set structure.
          "content": "A String", # The Markdown content of the page. You can use <code>&#40;== include {path}
              # ==&#41;</code> to include content from a Markdown file.
          "subpages": [ # Subpages of this page. The order of subpages specified here will be
              # honored in the generated docset.
            # Object with schema name: Page
          ],
          "name": "A String", # The name of the page. It will be used as an identity of the page to
              # generate URI of the page, text of the link to this page in navigation,
              # etc. The full page name (start from the root page name to this page
              # concatenated with `.`) can be used as reference to the page in your
              # documentation. For example:
              # <pre><code>pages:
              # - name: Tutorial
              #   content: &#40;== include tutorial.md ==&#41;
              #   subpages:
              #   - name: Java
              #     content: &#40;== include tutorial_java.md ==&#41;
              # </code></pre>
              # You can reference `Java` page using Markdown reference link syntax:
              # `Java`.
        },
      ],
      "summary": "A String", # A short summary of what the service does. Can only be provided by
          # plain text.
    },
    "sourceInfo": { # Source information used to create a Service Config # Output only. The source information for this configuration if available.
      "sourceFiles": [ # All files used during config generation.
        {
          "a_key": "", # Properties of the object. Contains field @type with type URL.
        },
      ],
    },
    "systemTypes": [ # A list of all proto message types included in this API service.
        # It serves similar purpose as [google.api.Service.types], except that
        # these types are not needed by user-defined APIs. Therefore, they will not
        # show up in the generated discovery doc. This field should only be used
        # to define system APIs in ESF.
      { # A protocol buffer message type.
        "oneofs": [ # The list of types appearing in `oneof` definitions in this type.
          "A String",
        ],
        "name": "A String", # The fully qualified message name.
        "fields": [ # The list of fields.
          { # A single field of a message type.
            "kind": "A String", # The field type.
            "oneofIndex": 42, # The index of the field type in `Type.oneofs`, for message or enumeration
                # types. The first type has index 1; zero means the type is not in the list.
            "typeUrl": "A String", # The field type URL, without the scheme, for message or enumeration
                # types. Example: `"type.googleapis.com/google.protobuf.Timestamp"`.
            "name": "A String", # The field name.
            "defaultValue": "A String", # The string value of the default value of this field. Proto2 syntax only.
            "jsonName": "A String", # The field JSON name.
            "number": 42, # The field number.
            "cardinality": "A String", # The field cardinality.
            "options": [ # The protocol buffer options.
              { # A protocol buffer option, which can be attached to a message, field,
                  # enumeration, etc.
                "name": "A String", # The option's name. For protobuf built-in options (options defined in
                    # descriptor.proto), this is the short name. For example, `"map_entry"`.
                    # For custom options, it should be the fully-qualified name. For example,
                    # `"google.api.http"`.
                "value": { # The option's value packed in an Any message. If the value is a primitive,
                    # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                    # should be used. If the value is an enum, it should be stored as an int32
                    # value using the google.protobuf.Int32Value type.
                  "a_key": "", # Properties of the object. Contains field @type with type URL.
                },
              },
            ],
            "packed": True or False, # Whether to use alternative packed wire representation.
          },
        ],
        "syntax": "A String", # The source syntax.
        "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
            # protobuf element, like the file in which it is defined.
          "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
              # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
        },
        "options": [ # The protocol buffer options.
          { # A protocol buffer option, which can be attached to a message, field,
              # enumeration, etc.
            "name": "A String", # The option's name. For protobuf built-in options (options defined in
                # descriptor.proto), this is the short name. For example, `"map_entry"`.
                # For custom options, it should be the fully-qualified name. For example,
                # `"google.api.http"`.
            "value": { # The option's value packed in an Any message. If the value is a primitive,
                # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                # should be used. If the value is an enum, it should be stored as an int32
                # value using the google.protobuf.Int32Value type.
              "a_key": "", # Properties of the object. Contains field @type with type URL.
            },
          },
        ],
      },
    ],
    "context": { # `Context` defines which contexts an API requests. # Context configuration.
        #
        # Example:
        #
        #     context:
        #       rules:
        #       - selector: "*"
        #         requested:
        #         - google.rpc.context.ProjectContext
        #         - google.rpc.context.OriginContext
        #
        # The above specifies that all methods in the API request
        # `google.rpc.context.ProjectContext` and
        # `google.rpc.context.OriginContext`.
        #
        # Available context types are defined in package
        # `google.rpc.context`.
        #
        # This also provides mechanism to whitelist any protobuf message extension that
        # can be sent in grpc metadata using “x-goog-ext-<extension_id>-bin” and
        # “x-goog-ext-<extension_id>-jspb” format. For example, list any service
        # specific protobuf types that can appear in grpc metadata as follows in your
        # yaml file:
        #
        # Example:
        #
        #     context:
        #       rules:
        #        - selector: "google.example.library.v1.LibraryService.CreateBook"
        #          allowed_request_extensions:
        #          - google.foo.v1.NewExtension
        #          allowed_response_extensions:
        #          - google.foo.v1.NewExtension
        #
        # You can also specify extension ID instead of fully qualified extension name
        # here.
      "rules": [ # A list of RPC context rules that apply to individual API methods.
          #
          # **NOTE:** All service configuration rules follow "last one wins" order.
        { # A context rule provides information about the context for an individual API
            # element.
          "provided": [ # A list of full type names of provided contexts.
            "A String",
          ],
          "allowedResponseExtensions": [ # A list of full type names or extension IDs of extensions allowed in grpc
              # side channel from backend to client.
            "A String",
          ],
          "selector": "A String", # Selects the methods to which this rule applies.
              #
              # Refer to selector for syntax details.
          "allowedRequestExtensions": [ # A list of full type names or extension IDs of extensions allowed in grpc
              # side channel from client to backend.
            "A String",
          ],
          "requested": [ # A list of full type names of requested contexts.
            "A String",
          ],
        },
      ],
    },
    "endpoints": [ # Configuration for network endpoints.  If this is empty, then an endpoint
        # with the same name as the service is automatically generated to service all
        # defined APIs.
      { # `Endpoint` describes a network endpoint that serves a set of APIs.
          # A service may expose any number of endpoints, and all endpoints share the
          # same service configuration, such as quota configuration and monitoring
          # configuration.
          #
          # Example service configuration:
          #
          #     name: library-example.googleapis.com
          #     endpoints:
          #       # Below entry makes 'google.example.library.v1.Library'
          #       # API be served from endpoint address library-example.googleapis.com.
          #       # It also allows HTTP OPTIONS calls to be passed to the backend, for
          #       # it to decide whether the subsequent cross-origin request is
          #       # allowed to proceed.
          #     - name: library-example.googleapis.com
          #       allow_cors: true
        "allowCors": True or False, # Allowing
            # [CORS](https://en.wikipedia.org/wiki/Cross-origin_resource_sharing), aka
            # cross-domain traffic, would allow the backends served from this endpoint to
            # receive and respond to HTTP OPTIONS requests. The response will be used by
            # the browser to determine whether the subsequent cross-origin request is
            # allowed to proceed.
        "target": "A String", # The specification of an Internet routable address of API frontend that will
            # handle requests to this [API
            # Endpoint](https://cloud.google.com/apis/design/glossary). It should be
            # either a valid IPv4 address or a fully-qualified domain name. For example,
            # "8.8.8.8" or "myservice.appspot.com".
        "features": [ # The list of features enabled on this endpoint.
          "A String",
        ],
        "name": "A String", # The canonical name of this endpoint.
        "aliases": [ # DEPRECATED: This field is no longer supported. Instead of using aliases,
            # please specify multiple google.api.Endpoint for each of the intended
            # aliases.
            #
            # Additional names that this endpoint will be hosted on.
          "A String",
        ],
      },
    ],
  }</pre>
</div>

<div class="method">
    <code class="details" id="list">list(serviceName, pageSize=None, pageToken=None, x__xgafv=None)</code>
  <pre>Lists the history of the service configuration for a managed service,
from the newest to the oldest.

Args:
  serviceName: string, The name of the service.  See the [overview](/service-management/overview)
for naming requirements.  For example: `example.googleapis.com`. (required)
  pageSize: integer, The max number of items to include in the response list. Page size is 50
if not specified. Maximum value is 100.
  pageToken: string, The token of the page to retrieve.
  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # Response message for ListServiceConfigs method.
    "nextPageToken": "A String", # The token of the next page of results.
    "serviceConfigs": [ # The list of service configuration resources.
      { # `Service` is the root object of Google service configuration schema. It
          # describes basic information about a service, such as the name and the
          # title, and delegates other aspects to sub-sections. Each sub-section is
          # either a proto message or a repeated proto message that configures a
          # specific aspect, such as auth. See each proto message definition for details.
          #
          # Example:
          #
          #     type: google.api.Service
          #     config_version: 3
          #     name: calendar.googleapis.com
          #     title: Google Calendar API
          #     apis:
          #     - name: google.calendar.v3.Calendar
          #     authentication:
          #       providers:
          #       - id: google_calendar_auth
          #         jwks_uri: https://www.googleapis.com/oauth2/v1/certs
          #         issuer: https://securetoken.google.com
          #       rules:
          #       - selector: "*"
          #         requirements:
          #           provider_id: google_calendar_auth
        "control": { # Selects and configures the service controller used by the service.  The # Configuration for the service control plane.
            # service controller handles features like abuse, quota, billing, logging,
            # monitoring, etc.
          "environment": "A String", # The service control environment to use. If empty, no control plane
              # feature (like quota and billing) will be enabled.
        },
        "monitoredResources": [ # Defines the monitored resources used by this service. This is required
            # by the Service.monitoring and Service.logging configurations.
          { # An object that describes the schema of a MonitoredResource object using a
              # type name and a set of labels.  For example, the monitored resource
              # descriptor for Google Compute Engine VM instances has a type of
              # `"gce_instance"` and specifies the use of the labels `"instance_id"` and
              # `"zone"` to identify particular VM instances.
              #
              # Different APIs can support different monitored resource types. APIs generally
              # provide a `list` method that returns the monitored resource descriptors used
              # by the API.
              #
              # Next ID: 10
            "displayName": "A String", # Optional. A concise name for the monitored resource type that might be
                # displayed in user interfaces. It should be a Title Cased Noun Phrase,
                # without any article or other determiners. For example,
                # `"Google Cloud SQL Database"`.
            "name": "A String", # Optional. The resource name of the monitored resource descriptor:
                # `"projects/{project_id}/monitoredResourceDescriptors/{type}"` where
                # {type} is the value of the `type` field in this object and
                # {project_id} is a project ID that provides API-specific context for
                # accessing the type.  APIs that do not use project information can use the
                # resource name format `"monitoredResourceDescriptors/{type}"`.
            "labels": [ # Required. A set of labels used to describe instances of this monitored
                # resource type. For example, an individual Google Cloud SQL database is
                # identified by values for the labels `"database_id"` and `"zone"`.
              { # A description of a label.
                "valueType": "A String", # The type of data that can be assigned to the label.
                "description": "A String", # A human-readable description for the label.
                "key": "A String", # The label key.
              },
            ],
            "launchStage": "A String", # Optional. The launch stage of the monitored resource definition.
            "type": "A String", # Required. The monitored resource type. For example, the type
                # `"cloudsql_database"` represents databases in Google Cloud SQL.
                # The maximum length of this value is 256 characters.
            "description": "A String", # Optional. A detailed description of the monitored resource type that might
                # be used in documentation.
          },
        ],
        "logs": [ # Defines the logs used by this service.
          { # A description of a log type. Example in YAML format:
              #
              #     - name: library.googleapis.com/activity_history
              #       description: The history of borrowing and returning library items.
              #       display_name: Activity
              #       labels:
              #       - key: /customer_id
              #         description: Identifier of a library customer
            "labels": [ # The set of labels that are available to describe a specific log entry.
                # Runtime requests that contain labels not specified here are
                # considered invalid.
              { # A description of a label.
                "valueType": "A String", # The type of data that can be assigned to the label.
                "description": "A String", # A human-readable description for the label.
                "key": "A String", # The label key.
              },
            ],
            "displayName": "A String", # The human-readable name for this log. This information appears on
                # the user interface and should be concise.
            "name": "A String", # The name of the log. It must be less than 512 characters long and can
                # include the following characters: upper- and lower-case alphanumeric
                # characters [A-Za-z0-9], and punctuation characters including
                # slash, underscore, hyphen, period [/_-.].
            "description": "A String", # A human-readable description of this log. This information appears in
                # the documentation and can contain details.
          },
        ],
        "systemParameters": { # ### System parameter configuration # System parameter configuration.
            #
            # A system parameter is a special kind of parameter defined by the API
            # system, not by an individual API. It is typically mapped to an HTTP header
            # and/or a URL query parameter. This configuration specifies which methods
            # change the names of the system parameters.
          "rules": [ # Define system parameters.
              #
              # The parameters defined here will override the default parameters
              # implemented by the system. If this field is missing from the service
              # config, default system parameters will be used. Default system parameters
              # and names is implementation-dependent.
              #
              # Example: define api key for all methods
              #
              #     system_parameters
              #       rules:
              #         - selector: "*"
              #           parameters:
              #             - name: api_key
              #               url_query_parameter: api_key
              #
              #
              # Example: define 2 api key names for a specific method.
              #
              #     system_parameters
              #       rules:
              #         - selector: "/ListShelves"
              #           parameters:
              #             - name: api_key
              #               http_header: Api-Key1
              #             - name: api_key
              #               http_header: Api-Key2
              #
              # **NOTE:** All service configuration rules follow "last one wins" order.
            { # Define a system parameter rule mapping system parameter definitions to
                # methods.
              "parameters": [ # Define parameters. Multiple names may be defined for a parameter.
                  # For a given method call, only one of them should be used. If multiple
                  # names are used the behavior is implementation-dependent.
                  # If none of the specified names are present the behavior is
                  # parameter-dependent.
                { # Define a parameter's name and location. The parameter may be passed as either
                    # an HTTP header or a URL query parameter, and if both are passed the behavior
                    # is implementation-dependent.
                  "urlQueryParameter": "A String", # Define the URL query parameter name to use for the parameter. It is case
                      # sensitive.
                  "httpHeader": "A String", # Define the HTTP header name to use for the parameter. It is case
                      # insensitive.
                  "name": "A String", # Define the name of the parameter, such as "api_key" . It is case sensitive.
                },
              ],
              "selector": "A String", # Selects the methods to which this rule applies. Use '*' to indicate all
                  # methods in all APIs.
                  #
                  # Refer to selector for syntax details.
            },
          ],
        },
        "id": "A String", # A unique ID for a specific instance of this message, typically assigned
            # by the client for tracking purpose. If empty, the server may choose to
            # generate one instead. Must be no longer than 60 characters.
        "backend": { # `Backend` defines the backend configuration for a service. # API backend configuration.
          "rules": [ # A list of API backend rules that apply to individual API methods.
              #
              # **NOTE:** All service configuration rules follow "last one wins" order.
            { # A backend rule provides configuration for an individual API element.
              "jwtAudience": "A String", # The JWT audience is used when generating a JWT id token for the backend.
              "pathTranslation": "A String",
              "minDeadline": 3.14, # Minimum deadline in seconds needed for this method. Calls having deadline
                  # value lower than this will be rejected.
              "selector": "A String", # Selects the methods to which this rule applies.
                  #
                  # Refer to selector for syntax details.
              "operationDeadline": 3.14, # The number of seconds to wait for the completion of a long running
                  # operation. The default is no deadline.
              "deadline": 3.14, # The number of seconds to wait for a response from a request.  The default
                  # deadline for gRPC is infinite (no deadline) and HTTP requests is 5 seconds.
              "address": "A String", # The address of the API backend.
            },
          ],
        },
        "monitoring": { # Monitoring configuration of the service. # Monitoring configuration.
            #
            # The example below shows how to configure monitored resources and metrics
            # for monitoring. In the example, a monitored resource and two metrics are
            # defined. The `library.googleapis.com/book/returned_count` metric is sent
            # to both producer and consumer projects, whereas the
            # `library.googleapis.com/book/overdue_count` metric is only sent to the
            # consumer project.
            #
            #     monitored_resources:
            #     - type: library.googleapis.com/branch
            #       labels:
            #       - key: /city
            #         description: The city where the library branch is located in.
            #       - key: /name
            #         description: The name of the branch.
            #     metrics:
            #     - name: library.googleapis.com/book/returned_count
            #       metric_kind: DELTA
            #       value_type: INT64
            #       labels:
            #       - key: /customer_id
            #     - name: library.googleapis.com/book/overdue_count
            #       metric_kind: GAUGE
            #       value_type: INT64
            #       labels:
            #       - key: /customer_id
            #     monitoring:
            #       producer_destinations:
            #       - monitored_resource: library.googleapis.com/branch
            #         metrics:
            #         - library.googleapis.com/book/returned_count
            #       consumer_destinations:
            #       - monitored_resource: library.googleapis.com/branch
            #         metrics:
            #         - library.googleapis.com/book/returned_count
            #         - library.googleapis.com/book/overdue_count
          "producerDestinations": [ # Monitoring configurations for sending metrics to the producer project.
              # There can be multiple producer destinations. A monitored resouce type may
              # appear in multiple monitoring destinations if different aggregations are
              # needed for different sets of metrics associated with that monitored
              # resource type. A monitored resource and metric pair may only be used once
              # in the Monitoring configuration.
            { # Configuration of a specific monitoring destination (the producer project
                # or the consumer project).
              "monitoredResource": "A String", # The monitored resource type. The type must be defined in
                  # Service.monitored_resources section.
              "metrics": [ # Types of the metrics to report to this monitoring destination.
                  # Each type must be defined in Service.metrics section.
                "A String",
              ],
            },
          ],
          "consumerDestinations": [ # Monitoring configurations for sending metrics to the consumer project.
              # There can be multiple consumer destinations. A monitored resouce type may
              # appear in multiple monitoring destinations if different aggregations are
              # needed for different sets of metrics associated with that monitored
              # resource type. A monitored resource and metric pair may only be used once
              # in the Monitoring configuration.
            { # Configuration of a specific monitoring destination (the producer project
                # or the consumer project).
              "monitoredResource": "A String", # The monitored resource type. The type must be defined in
                  # Service.monitored_resources section.
              "metrics": [ # Types of the metrics to report to this monitoring destination.
                  # Each type must be defined in Service.metrics section.
                "A String",
              ],
            },
          ],
        },
        "billing": { # Billing related configuration of the service. # Billing configuration.
            #
            # The following example shows how to configure monitored resources and metrics
            # for billing:
            #
            #     monitored_resources:
            #     - type: library.googleapis.com/branch
            #       labels:
            #       - key: /city
            #         description: The city where the library branch is located in.
            #       - key: /name
            #         description: The name of the branch.
            #     metrics:
            #     - name: library.googleapis.com/book/borrowed_count
            #       metric_kind: DELTA
            #       value_type: INT64
            #     billing:
            #       consumer_destinations:
            #       - monitored_resource: library.googleapis.com/branch
            #         metrics:
            #         - library.googleapis.com/book/borrowed_count
          "consumerDestinations": [ # Billing configurations for sending metrics to the consumer project.
              # There can be multiple consumer destinations per service, each one must have
              # a different monitored resource type. A metric can be used in at most
              # one consumer destination.
            { # Configuration of a specific billing destination (Currently only support
                # bill against consumer project).
              "monitoredResource": "A String", # The monitored resource type. The type must be defined in
                  # Service.monitored_resources section.
              "metrics": [ # Names of the metrics to report to this billing destination.
                  # Each name must be defined in Service.metrics section.
                "A String",
              ],
            },
          ],
        },
        "title": "A String", # The product title for this service.
        "authentication": { # `Authentication` defines the authentication configuration for an API. # Auth configuration.
            #
            # Example for an API targeted for external use:
            #
            #     name: calendar.googleapis.com
            #     authentication:
            #       providers:
            #       - id: google_calendar_auth
            #         jwks_uri: https://www.googleapis.com/oauth2/v1/certs
            #         issuer: https://securetoken.google.com
            #       rules:
            #       - selector: "*"
            #         requirements:
            #           provider_id: google_calendar_auth
          "rules": [ # A list of authentication rules that apply to individual API methods.
              #
              # **NOTE:** All service configuration rules follow "last one wins" order.
            { # Authentication rules for the service.
                #
                # By default, if a method has any authentication requirements, every request
                # must include a valid credential matching one of the requirements.
                # It's an error to include more than one kind of credential in a single
                # request.
                #
                # If a method doesn't have any auth requirements, request credentials will be
                # ignored.
              "oauth": { # OAuth scopes are a way to define data and permissions on data. For example, # The requirements for OAuth credentials.
                  # there are scopes defined for "Read-only access to Google Calendar" and
                  # "Access to Cloud Platform". Users can consent to a scope for an application,
                  # giving it permission to access that data on their behalf.
                  #
                  # OAuth scope specifications should be fairly coarse grained; a user will need
                  # to see and understand the text description of what your scope means.
                  #
                  # In most cases: use one or at most two OAuth scopes for an entire family of
                  # products. If your product has multiple APIs, you should probably be sharing
                  # the OAuth scope across all of those APIs.
                  #
                  # When you need finer grained OAuth consent screens: talk with your product
                  # management about how developers will use them in practice.
                  #
                  # Please note that even though each of the canonical scopes is enough for a
                  # request to be accepted and passed to the backend, a request can still fail
                  # due to the backend requiring additional scopes or permissions.
                "canonicalScopes": "A String", # The list of publicly documented OAuth scopes that are allowed access. An
                    # OAuth token containing any of these scopes will be accepted.
                    #
                    # Example:
                    #
                    #      canonical_scopes: https://www.googleapis.com/auth/calendar,
                    #                        https://www.googleapis.com/auth/calendar.read
              },
              "allowWithoutCredential": True or False, # If true, the service accepts API keys without any other credential.
              "requirements": [ # Requirements for additional authentication providers.
                { # User-defined authentication requirements, including support for
                    # [JSON Web Token
                    # (JWT)](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32).
                  "providerId": "A String", # id from authentication provider.
                      #
                      # Example:
                      #
                      #     provider_id: bookstore_auth
                  "audiences": "A String", # NOTE: This will be deprecated soon, once AuthProvider.audiences is
                      # implemented and accepted in all the runtime components.
                      #
                      # The list of JWT
                      # [audiences](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.3).
                      # that are allowed to access. A JWT containing any of these audiences will
                      # be accepted. When this setting is absent, only JWTs with audience
                      # "https://Service_name/API_name"
                      # will be accepted. For example, if no audiences are in the setting,
                      # LibraryService API will only accept JWTs with the following audience
                      # "https://library-example.googleapis.com/google.example.library.v1.LibraryService".
                      #
                      # Example:
                      #
                      #     audiences: bookstore_android.apps.googleusercontent.com,
                      #                bookstore_web.apps.googleusercontent.com
                },
              ],
              "selector": "A String", # Selects the methods to which this rule applies.
                  #
                  # Refer to selector for syntax details.
            },
          ],
          "providers": [ # Defines a set of authentication providers that a service supports.
            { # Configuration for an authentication provider, including support for
                # [JSON Web Token
                # (JWT)](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32).
              "jwksUri": "A String", # URL of the provider's public key set to validate signature of the JWT. See
                  # [OpenID
                  # Discovery](https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderMetadata).
                  # Optional if the key set document:
                  #  - can be retrieved from
                  #    [OpenID
                  #    Discovery](https://openid.net/specs/openid-connect-discovery-1_0.html of
                  #    the issuer.
                  #  - can be inferred from the email domain of the issuer (e.g. a Google
                  #  service account).
                  #
                  # Example: https://www.googleapis.com/oauth2/v1/certs
              "audiences": "A String", # The list of JWT
                  # [audiences](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.3).
                  # that are allowed to access. A JWT containing any of these audiences will
                  # be accepted. When this setting is absent, only JWTs with audience
                  # "https://Service_name/API_name"
                  # will be accepted. For example, if no audiences are in the setting,
                  # LibraryService API will only accept JWTs with the following audience
                  # "https://library-example.googleapis.com/google.example.library.v1.LibraryService".
                  #
                  # Example:
                  #
                  #     audiences: bookstore_android.apps.googleusercontent.com,
                  #                bookstore_web.apps.googleusercontent.com
              "id": "A String", # The unique identifier of the auth provider. It will be referred to by
                  # `AuthRequirement.provider_id`.
                  #
                  # Example: "bookstore_auth".
              "authorizationUrl": "A String", # Redirect URL if JWT token is required but not present or is expired.
                  # Implement authorizationUrl of securityDefinitions in OpenAPI spec.
              "issuer": "A String", # Identifies the principal that issued the JWT. See
                  # https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.1
                  # Usually a URL or an email address.
                  #
                  # Example: https://securetoken.google.com
                  # Example: 1234567-compute@developer.gserviceaccount.com
            },
          ],
        },
        "usage": { # Configuration controlling usage of a service. # Configuration controlling usage of this service.
          "rules": [ # A list of usage rules that apply to individual API methods.
              #
              # **NOTE:** All service configuration rules follow "last one wins" order.
            { # Usage configuration rules for the service.
                #
                # NOTE: Under development.
                #
                #
                # Use this rule to configure unregistered calls for the service. Unregistered
                # calls are calls that do not contain consumer project identity.
                # (Example: calls that do not contain an API key).
                # By default, API methods do not allow unregistered calls, and each method call
                # must be identified by a consumer project identity. Use this rule to
                # allow/disallow unregistered calls.
                #
                # Example of an API that wants to allow unregistered calls for entire service.
                #
                #     usage:
                #       rules:
                #       - selector: "*"
                #         allow_unregistered_calls: true
                #
                # Example of a method that wants to allow unregistered calls.
                #
                #     usage:
                #       rules:
                #       - selector: "google.example.library.v1.LibraryService.CreateBook"
                #         allow_unregistered_calls: true
              "skipServiceControl": True or False, # If true, the selected method should skip service control and the control
                  # plane features, such as quota and billing, will not be available.
                  # This flag is used by Google Cloud Endpoints to bypass checks for internal
                  # methods, such as service health check methods.
              "allowUnregisteredCalls": True or False, # If true, the selected method allows unregistered calls, e.g. calls
                  # that don't identify any user or application.
              "selector": "A String", # Selects the methods to which this rule applies. Use '*' to indicate all
                  # methods in all APIs.
                  #
                  # Refer to selector for syntax details.
            },
          ],
          "producerNotificationChannel": "A String", # The full resource name of a channel used for sending notifications to the
              # service producer.
              #
              # Google Service Management currently only supports
              # [Google Cloud Pub/Sub](https://cloud.google.com/pubsub) as a notification
              # channel. To use Google Cloud Pub/Sub as the channel, this must be the name
              # of a Cloud Pub/Sub topic that uses the Cloud Pub/Sub topic name format
              # documented in https://cloud.google.com/pubsub/docs/overview.
          "requirements": [ # Requirements that must be satisfied before a consumer project can use the
              # service. Each requirement is of the form <service.name>/<requirement-id>;
              # for example 'serviceusage.googleapis.com/billing-enabled'.
            "A String",
          ],
        },
        "configVersion": 42, # The semantic version of the service configuration. The config version
            # affects the interpretation of the service configuration. For example,
            # certain features are enabled by default for certain config versions.
            # The latest config version is `3`.
        "producerProjectId": "A String", # The Google project that owns this service.
        "http": { # Defines the HTTP configuration for an API service. It contains a list of # HTTP configuration.
            # HttpRule, each specifying the mapping of an RPC method
            # to one or more HTTP REST API methods.
          "rules": [ # A list of HTTP configuration rules that apply to individual API methods.
              #
              # **NOTE:** All service configuration rules follow "last one wins" order.
            { # # gRPC Transcoding
                #
                # gRPC Transcoding is a feature for mapping between a gRPC method and one or
                # more HTTP REST endpoints. It allows developers to build a single API service
                # that supports both gRPC APIs and REST APIs. Many systems, including [Google
                # APIs](https://github.com/googleapis/googleapis),
                # [Cloud Endpoints](https://cloud.google.com/endpoints), [gRPC
                # Gateway](https://github.com/grpc-ecosystem/grpc-gateway),
                # and [Envoy](https://github.com/envoyproxy/envoy) proxy support this feature
                # and use it for large scale production services.
                #
                # `HttpRule` defines the schema of the gRPC/REST mapping. The mapping specifies
                # how different portions of the gRPC request message are mapped to the URL
                # path, URL query parameters, and HTTP request body. It also controls how the
                # gRPC response message is mapped to the HTTP response body. `HttpRule` is
                # typically specified as an `google.api.http` annotation on the gRPC method.
                #
                # Each mapping specifies a URL path template and an HTTP method. The path
                # template may refer to one or more fields in the gRPC request message, as long
                # as each field is a non-repeated field with a primitive (non-message) type.
                # The path template controls how fields of the request message are mapped to
                # the URL path.
                #
                # Example:
                #
                #     service Messaging {
                #       rpc GetMessage(GetMessageRequest) returns (Message) {
                #         option (google.api.http) = {
                #             get: "/v1/{name=messages/*}"
                #         };
                #       }
                #     }
                #     message GetMessageRequest {
                #       string name = 1; // Mapped to URL path.
                #     }
                #     message Message {
                #       string text = 1; // The resource content.
                #     }
                #
                # This enables an HTTP REST to gRPC mapping as below:
                #
                # HTTP | gRPC
                # -----|-----
                # `GET /v1/messages/123456`  | `GetMessage(name: "messages/123456")`
                #
                # Any fields in the request message which are not bound by the path template
                # automatically become HTTP query parameters if there is no HTTP request body.
                # For example:
                #
                #     service Messaging {
                #       rpc GetMessage(GetMessageRequest) returns (Message) {
                #         option (google.api.http) = {
                #             get:"/v1/messages/{message_id}"
                #         };
                #       }
                #     }
                #     message GetMessageRequest {
                #       message SubMessage {
                #         string subfield = 1;
                #       }
                #       string message_id = 1; // Mapped to URL path.
                #       int64 revision = 2;    // Mapped to URL query parameter `revision`.
                #       SubMessage sub = 3;    // Mapped to URL query parameter `sub.subfield`.
                #     }
                #
                # This enables a HTTP JSON to RPC mapping as below:
                #
                # HTTP | gRPC
                # -----|-----
                # `GET /v1/messages/123456?revision=2&sub.subfield=foo` |
                # `GetMessage(message_id: "123456" revision: 2 sub: SubMessage(subfield:
                # "foo"))`
                #
                # Note that fields which are mapped to URL query parameters must have a
                # primitive type or a repeated primitive type or a non-repeated message type.
                # In the case of a repeated type, the parameter can be repeated in the URL
                # as `...?param=A&param=B`. In the case of a message type, each field of the
                # message is mapped to a separate parameter, such as
                # `...?foo.a=A&foo.b=B&foo.c=C`.
                #
                # For HTTP methods that allow a request body, the `body` field
                # specifies the mapping. Consider a REST update method on the
                # message resource collection:
                #
                #     service Messaging {
                #       rpc UpdateMessage(UpdateMessageRequest) returns (Message) {
                #         option (google.api.http) = {
                #           patch: "/v1/messages/{message_id}"
                #           body: "message"
                #         };
                #       }
                #     }
                #     message UpdateMessageRequest {
                #       string message_id = 1; // mapped to the URL
                #       Message message = 2;   // mapped to the body
                #     }
                #
                # The following HTTP JSON to RPC mapping is enabled, where the
                # representation of the JSON in the request body is determined by
                # protos JSON encoding:
                #
                # HTTP | gRPC
                # -----|-----
                # `PATCH /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id:
                # "123456" message { text: "Hi!" })`
                #
                # The special name `*` can be used in the body mapping to define that
                # every field not bound by the path template should be mapped to the
                # request body.  This enables the following alternative definition of
                # the update method:
                #
                #     service Messaging {
                #       rpc UpdateMessage(Message) returns (Message) {
                #         option (google.api.http) = {
                #           patch: "/v1/messages/{message_id}"
                #           body: "*"
                #         };
                #       }
                #     }
                #     message Message {
                #       string message_id = 1;
                #       string text = 2;
                #     }
                #
                #
                # The following HTTP JSON to RPC mapping is enabled:
                #
                # HTTP | gRPC
                # -----|-----
                # `PATCH /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id:
                # "123456" text: "Hi!")`
                #
                # Note that when using `*` in the body mapping, it is not possible to
                # have HTTP parameters, as all fields not bound by the path end in
                # the body. This makes this option more rarely used in practice when
                # defining REST APIs. The common usage of `*` is in custom methods
                # which don't use the URL at all for transferring data.
                #
                # It is possible to define multiple HTTP methods for one RPC by using
                # the `additional_bindings` option. Example:
                #
                #     service Messaging {
                #       rpc GetMessage(GetMessageRequest) returns (Message) {
                #         option (google.api.http) = {
                #           get: "/v1/messages/{message_id}"
                #           additional_bindings {
                #             get: "/v1/users/{user_id}/messages/{message_id}"
                #           }
                #         };
                #       }
                #     }
                #     message GetMessageRequest {
                #       string message_id = 1;
                #       string user_id = 2;
                #     }
                #
                # This enables the following two alternative HTTP JSON to RPC mappings:
                #
                # HTTP | gRPC
                # -----|-----
                # `GET /v1/messages/123456` | `GetMessage(message_id: "123456")`
                # `GET /v1/users/me/messages/123456` | `GetMessage(user_id: "me" message_id:
                # "123456")`
                #
                # ## Rules for HTTP mapping
                #
                # 1. Leaf request fields (recursive expansion nested messages in the request
                #    message) are classified into three categories:
                #    - Fields referred by the path template. They are passed via the URL path.
                #    - Fields referred by the HttpRule.body. They are passed via the HTTP
                #      request body.
                #    - All other fields are passed via the URL query parameters, and the
                #      parameter name is the field path in the request message. A repeated
                #      field can be represented as multiple query parameters under the same
                #      name.
                #  2. If HttpRule.body is "*", there is no URL query parameter, all fields
                #     are passed via URL path and HTTP request body.
                #  3. If HttpRule.body is omitted, there is no HTTP request body, all
                #     fields are passed via URL path and URL query parameters.
                #
                # ### Path template syntax
                #
                #     Template = "/" Segments [ Verb ] ;
                #     Segments = Segment { "/" Segment } ;
                #     Segment  = "*" | "**" | LITERAL | Variable ;
                #     Variable = "{" FieldPath [ "=" Segments ] "}" ;
                #     FieldPath = IDENT { "." IDENT } ;
                #     Verb     = ":" LITERAL ;
                #
                # The syntax `*` matches a single URL path segment. The syntax `**` matches
                # zero or more URL path segments, which must be the last part of the URL path
                # except the `Verb`.
                #
                # The syntax `Variable` matches part of the URL path as specified by its
                # template. A variable template must not contain other variables. If a variable
                # matches a single path segment, its template may be omitted, e.g. `{var}`
                # is equivalent to `{var=*}`.
                #
                # The syntax `LITERAL` matches literal text in the URL path. If the `LITERAL`
                # contains any reserved character, such characters should be percent-encoded
                # before the matching.
                #
                # If a variable contains exactly one path segment, such as `"{var}"` or
                # `"{var=*}"`, when such a variable is expanded into a URL path on the client
                # side, all characters except `[-_.~0-9a-zA-Z]` are percent-encoded. The
                # server side does the reverse decoding. Such variables show up in the
                # [Discovery
                # Document](https://developers.google.com/discovery/v1/reference/apis) as
                # `{var}`.
                #
                # If a variable contains multiple path segments, such as `"{var=foo/*}"`
                # or `"{var=**}"`, when such a variable is expanded into a URL path on the
                # client side, all characters except `[-_.~/0-9a-zA-Z]` are percent-encoded.
                # The server side does the reverse decoding, except "%2F" and "%2f" are left
                # unchanged. Such variables show up in the
                # [Discovery
                # Document](https://developers.google.com/discovery/v1/reference/apis) as
                # `{+var}`.
                #
                # ## Using gRPC API Service Configuration
                #
                # gRPC API Service Configuration (service config) is a configuration language
                # for configuring a gRPC service to become a user-facing product. The
                # service config is simply the YAML representation of the `google.api.Service`
                # proto message.
                #
                # As an alternative to annotating your proto file, you can configure gRPC
                # transcoding in your service config YAML files. You do this by specifying a
                # `HttpRule` that maps the gRPC method to a REST endpoint, achieving the same
                # effect as the proto annotation. This can be particularly useful if you
                # have a proto that is reused in multiple services. Note that any transcoding
                # specified in the service config will override any matching transcoding
                # configuration in the proto.
                #
                # Example:
                #
                #     http:
                #       rules:
                #         # Selects a gRPC method and applies HttpRule to it.
                #         - selector: example.v1.Messaging.GetMessage
                #           get: /v1/messages/{message_id}/{sub.subfield}
                #
                # ## Special notes
                #
                # When gRPC Transcoding is used to map a gRPC to JSON REST endpoints, the
                # proto to JSON conversion must follow the [proto3
                # specification](https://developers.google.com/protocol-buffers/docs/proto3#json).
                #
                # While the single segment variable follows the semantics of
                # [RFC 6570](https://tools.ietf.org/html/rfc6570) Section 3.2.2 Simple String
                # Expansion, the multi segment variable **does not** follow RFC 6570 Section
                # 3.2.3 Reserved Expansion. The reason is that the Reserved Expansion
                # does not expand special characters like `?` and `#`, which would lead
                # to invalid URLs. As the result, gRPC Transcoding uses a custom encoding
                # for multi segment variables.
                #
                # The path variables **must not** refer to any repeated or mapped field,
                # because client libraries are not capable of handling such variable expansion.
                #
                # The path variables **must not** capture the leading "/" character. The reason
                # is that the most common use case "{var}" does not capture the leading "/"
                # character. For consistency, all path variables must share the same behavior.
                #
                # Repeated message fields must not be mapped to URL query parameters, because
                # no client library can support such complicated mapping.
                #
                # If an API needs to use a JSON array for request or response body, it can map
                # the request or response body to a repeated field. However, some gRPC
                # Transcoding implementations may not support this feature.
              "body": "A String", # The name of the request field whose value is mapped to the HTTP request
                  # body, or `*` for mapping all request fields not captured by the path
                  # pattern to the HTTP body, or omitted for not having any HTTP request body.
                  #
                  # NOTE: the referred field must be present at the top-level of the request
                  # message type.
              "additionalBindings": [ # Additional HTTP bindings for the selector. Nested bindings must
                  # not contain an `additional_bindings` field themselves (that is,
                  # the nesting may only be one level deep).
                # Object with schema name: HttpRule
              ],
              "get": "A String", # Maps to HTTP GET. Used for listing and getting information about
                  # resources.
              "patch": "A String", # Maps to HTTP PATCH. Used for updating a resource.
              "custom": { # A custom pattern is used for defining custom HTTP verb. # The custom pattern is used for specifying an HTTP method that is not
                  # included in the `pattern` field, such as HEAD, or "*" to leave the
                  # HTTP method unspecified for this rule. The wild-card rule is useful
                  # for services that provide content to Web (HTML) clients.
                "path": "A String", # The path matched by this custom verb.
                "kind": "A String", # The name of this custom HTTP verb.
              },
              "responseBody": "A String", # Optional. The name of the response field whose value is mapped to the HTTP
                  # response body. When omitted, the entire response message will be used
                  # as the HTTP response body.
                  #
                  # NOTE: The referred field must be present at the top-level of the response
                  # message type.
              "put": "A String", # Maps to HTTP PUT. Used for replacing a resource.
              "post": "A String", # Maps to HTTP POST. Used for creating a resource or performing an action.
              "selector": "A String", # Selects a method to which this rule applies.
                  #
                  # Refer to selector for syntax details.
              "delete": "A String", # Maps to HTTP DELETE. Used for deleting a resource.
            },
          ],
          "fullyDecodeReservedExpansion": True or False, # When set to true, URL path parameters will be fully URI-decoded except in
              # cases of single segment matches in reserved expansion, where "%2F" will be
              # left encoded.
              #
              # The default behavior is to not decode RFC 6570 reserved characters in multi
              # segment matches.
        },
        "apis": [ # A list of API interfaces exported by this service. Only the `name` field
            # of the google.protobuf.Api needs to be provided by the configuration
            # author, as the remaining fields will be derived from the IDL during the
            # normalization process. It is an error to specify an API interface here
            # which cannot be resolved against the associated IDL files.
          { # Api is a light-weight descriptor for an API Interface.
              #
              # Interfaces are also described as "protocol buffer services" in some contexts,
              # such as by the "service" keyword in a .proto file, but they are different
              # from API Services, which represent a concrete implementation of an interface
              # as opposed to simply a description of methods and bindings. They are also
              # sometimes simply referred to as "APIs" in other contexts, such as the name of
              # this message itself. See https://cloud.google.com/apis/design/glossary for
              # detailed terminology.
            "methods": [ # The methods of this interface, in unspecified order.
              { # Method represents a method of an API interface.
                "name": "A String", # The simple name of this method.
                "requestStreaming": True or False, # If true, the request is streamed.
                "responseTypeUrl": "A String", # The URL of the output message type.
                "requestTypeUrl": "A String", # A URL of the input message type.
                "responseStreaming": True or False, # If true, the response is streamed.
                "syntax": "A String", # The source syntax of this method.
                "options": [ # Any metadata attached to the method.
                  { # A protocol buffer option, which can be attached to a message, field,
                      # enumeration, etc.
                    "name": "A String", # The option's name. For protobuf built-in options (options defined in
                        # descriptor.proto), this is the short name. For example, `"map_entry"`.
                        # For custom options, it should be the fully-qualified name. For example,
                        # `"google.api.http"`.
                    "value": { # The option's value packed in an Any message. If the value is a primitive,
                        # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                        # should be used. If the value is an enum, it should be stored as an int32
                        # value using the google.protobuf.Int32Value type.
                      "a_key": "", # Properties of the object. Contains field @type with type URL.
                    },
                  },
                ],
              },
            ],
            "sourceContext": { # `SourceContext` represents information about the source of a # Source context for the protocol buffer service represented by this
                # message.
                # protobuf element, like the file in which it is defined.
              "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
                  # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
            },
            "mixins": [ # Included interfaces. See Mixin.
              { # Declares an API Interface to be included in this interface. The including
                  # interface must redeclare all the methods from the included interface, but
                  # documentation and options are inherited as follows:
                  #
                  # - If after comment and whitespace stripping, the documentation
                  #   string of the redeclared method is empty, it will be inherited
                  #   from the original method.
                  #
                  # - Each annotation belonging to the service config (http,
                  #   visibility) which is not set in the redeclared method will be
                  #   inherited.
                  #
                  # - If an http annotation is inherited, the path pattern will be
                  #   modified as follows. Any version prefix will be replaced by the
                  #   version of the including interface plus the root path if
                  #   specified.
                  #
                  # Example of a simple mixin:
                  #
                  #     package google.acl.v1;
                  #     service AccessControl {
                  #       // Get the underlying ACL object.
                  #       rpc GetAcl(GetAclRequest) returns (Acl) {
                  #         option (google.api.http).get = "/v1/{resource=**}:getAcl";
                  #       }
                  #     }
                  #
                  #     package google.storage.v2;
                  #     service Storage {
                  #       //       rpc GetAcl(GetAclRequest) returns (Acl);
                  #
                  #       // Get a data record.
                  #       rpc GetData(GetDataRequest) returns (Data) {
                  #         option (google.api.http).get = "/v2/{resource=**}";
                  #       }
                  #     }
                  #
                  # Example of a mixin configuration:
                  #
                  #     apis:
                  #     - name: google.storage.v2.Storage
                  #       mixins:
                  #       - name: google.acl.v1.AccessControl
                  #
                  # The mixin construct implies that all methods in `AccessControl` are
                  # also declared with same name and request/response types in
                  # `Storage`. A documentation generator or annotation processor will
                  # see the effective `Storage.GetAcl` method after inherting
                  # documentation and annotations as follows:
                  #
                  #     service Storage {
                  #       // Get the underlying ACL object.
                  #       rpc GetAcl(GetAclRequest) returns (Acl) {
                  #         option (google.api.http).get = "/v2/{resource=**}:getAcl";
                  #       }
                  #       ...
                  #     }
                  #
                  # Note how the version in the path pattern changed from `v1` to `v2`.
                  #
                  # If the `root` field in the mixin is specified, it should be a
                  # relative path under which inherited HTTP paths are placed. Example:
                  #
                  #     apis:
                  #     - name: google.storage.v2.Storage
                  #       mixins:
                  #       - name: google.acl.v1.AccessControl
                  #         root: acls
                  #
                  # This implies the following inherited HTTP annotation:
                  #
                  #     service Storage {
                  #       // Get the underlying ACL object.
                  #       rpc GetAcl(GetAclRequest) returns (Acl) {
                  #         option (google.api.http).get = "/v2/acls/{resource=**}:getAcl";
                  #       }
                  #       ...
                  #     }
                "root": "A String", # If non-empty specifies a path under which inherited HTTP paths
                    # are rooted.
                "name": "A String", # The fully qualified name of the interface which is included.
              },
            ],
            "syntax": "A String", # The source syntax of the service.
            "version": "A String", # A version string for this interface. If specified, must have the form
                # `major-version.minor-version`, as in `1.10`. If the minor version is
                # omitted, it defaults to zero. If the entire version field is empty, the
                # major version is derived from the package name, as outlined below. If the
                # field is not empty, the version in the package name will be verified to be
                # consistent with what is provided here.
                #
                # The versioning schema uses [semantic
                # versioning](http://semver.org) where the major version number
                # indicates a breaking change and the minor version an additive,
                # non-breaking change. Both version numbers are signals to users
                # what to expect from different versions, and should be carefully
                # chosen based on the product plan.
                #
                # The major version is also reflected in the package name of the
                # interface, which must end in `v<major-version>`, as in
                # `google.feature.v1`. For major versions 0 and 1, the suffix can
                # be omitted. Zero major versions must only be used for
                # experimental, non-GA interfaces.
            "options": [ # Any metadata attached to the interface.
              { # A protocol buffer option, which can be attached to a message, field,
                  # enumeration, etc.
                "name": "A String", # The option's name. For protobuf built-in options (options defined in
                    # descriptor.proto), this is the short name. For example, `"map_entry"`.
                    # For custom options, it should be the fully-qualified name. For example,
                    # `"google.api.http"`.
                "value": { # The option's value packed in an Any message. If the value is a primitive,
                    # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                    # should be used. If the value is an enum, it should be stored as an int32
                    # value using the google.protobuf.Int32Value type.
                  "a_key": "", # Properties of the object. Contains field @type with type URL.
                },
              },
            ],
            "name": "A String", # The fully qualified name of this interface, including package name
                # followed by the interface's simple name.
          },
        ],
        "customError": { # Customize service error responses.  For example, list any service # Custom error configuration.
            # specific protobuf types that can appear in error detail lists of
            # error responses.
            #
            # Example:
            #
            #     custom_error:
            #       types:
            #       - google.foo.v1.CustomError
            #       - google.foo.v1.AnotherError
          "rules": [ # The list of custom error rules that apply to individual API messages.
              #
              # **NOTE:** All service configuration rules follow "last one wins" order.
            { # A custom error rule.
              "isErrorType": True or False, # Mark this message as possible payload in error response.  Otherwise,
                  # objects of this type will be filtered when they appear in error payload.
              "selector": "A String", # Selects messages to which this rule applies.
                  #
                  # Refer to selector for syntax details.
            },
          ],
          "types": [ # The list of custom error detail types, e.g. 'google.foo.v1.CustomError'.
            "A String",
          ],
        },
        "quota": { # Quota configuration helps to achieve fairness and budgeting in service # Quota configuration.
            # usage.
            #
            # The metric based quota configuration works this way:
            # - The service configuration defines a set of metrics.
            # - For API calls, the quota.metric_rules maps methods to metrics with
            #   corresponding costs.
            # - The quota.limits defines limits on the metrics, which will be used for
            #   quota checks at runtime.
            #
            # An example quota configuration in yaml format:
            #
            #    quota:
            #      limits:
            #
            #      - name: apiWriteQpsPerProject
            #        metric: library.googleapis.com/write_calls
            #        unit: "1/min/{project}"  # rate limit for consumer projects
            #        values:
            #          STANDARD: 10000
            #
            #
            #      # The metric rules bind all methods to the read_calls metric,
            #      # except for the UpdateBook and DeleteBook methods. These two methods
            #      # are mapped to the write_calls metric, with the UpdateBook method
            #      # consuming at twice rate as the DeleteBook method.
            #      metric_rules:
            #      - selector: "*"
            #        metric_costs:
            #          library.googleapis.com/read_calls: 1
            #      - selector: google.example.library.v1.LibraryService.UpdateBook
            #        metric_costs:
            #          library.googleapis.com/write_calls: 2
            #      - selector: google.example.library.v1.LibraryService.DeleteBook
            #        metric_costs:
            #          library.googleapis.com/write_calls: 1
            #
            #  Corresponding Metric definition:
            #
            #      metrics:
            #      - name: library.googleapis.com/read_calls
            #        display_name: Read requests
            #        metric_kind: DELTA
            #        value_type: INT64
            #
            #      - name: library.googleapis.com/write_calls
            #        display_name: Write requests
            #        metric_kind: DELTA
            #        value_type: INT64
            #
          "metricRules": [ # List of `MetricRule` definitions, each one mapping a selected method to one
              # or more metrics.
            { # Bind API methods to metrics. Binding a method to a metric causes that
                # metric's configured quota behaviors to apply to the method call.
              "metricCosts": { # Metrics to update when the selected methods are called, and the associated
                  # cost applied to each metric.
                  #
                  # The key of the map is the metric name, and the values are the amount
                  # increased for the metric against which the quota limits are defined.
                  # The value must not be negative.
                "a_key": "A String",
              },
              "selector": "A String", # Selects the methods to which this rule applies.
                  #
                  # Refer to selector for syntax details.
            },
          ],
          "limits": [ # List of `QuotaLimit` definitions for the service.
            { # `QuotaLimit` defines a specific limit that applies over a specified duration
                # for a limit type. There can be at most one limit for a duration and limit
                # type combination defined within a `QuotaGroup`.
              "displayName": "A String", # User-visible display name for this limit.
                  # Optional. If not set, the UI will provide a default display name based on
                  # the quota configuration. This field can be used to override the default
                  # display name generated from the configuration.
              "name": "A String", # Name of the quota limit.
                  #
                  # The name must be provided, and it must be unique within the service. The
                  # name can only include alphanumeric characters as well as '-'.
                  #
                  # The maximum length of the limit name is 64 characters.
              "defaultLimit": "A String", # Default number of tokens that can be consumed during the specified
                  # duration. This is the number of tokens assigned when a client
                  # application developer activates the service for his/her project.
                  #
                  # Specifying a value of 0 will block all requests. This can be used if you
                  # are provisioning quota to selected consumers and blocking others.
                  # Similarly, a value of -1 will indicate an unlimited quota. No other
                  # negative values are allowed.
                  #
                  # Used by group-based quotas only.
              "metric": "A String", # The name of the metric this quota limit applies to. The quota limits with
                  # the same metric will be checked together during runtime. The metric must be
                  # defined within the service config.
              "values": { # Tiered limit values. You must specify this as a key:value pair, with an
                  # integer value that is the maximum number of requests allowed for the
                  # specified unit. Currently only STANDARD is supported.
                "a_key": "A String",
              },
              "maxLimit": "A String", # Maximum number of tokens that can be consumed during the specified
                  # duration. Client application developers can override the default limit up
                  # to this maximum. If specified, this value cannot be set to a value less
                  # than the default limit. If not specified, it is set to the default limit.
                  #
                  # To allow clients to apply overrides with no upper bound, set this to -1,
                  # indicating unlimited maximum quota.
                  #
                  # Used by group-based quotas only.
              "duration": "A String", # Duration of this limit in textual notation. Example: "100s", "24h", "1d".
                  # For duration longer than a day, only multiple of days is supported. We
                  # support only "100s" and "1d" for now. Additional support will be added in
                  # the future. "0" indicates indefinite duration.
                  #
                  # Used by group-based quotas only.
              "freeTier": "A String", # Free tier value displayed in the Developers Console for this limit.
                  # The free tier is the number of tokens that will be subtracted from the
                  # billed amount when billing is enabled.
                  # This field can only be set on a limit with duration "1d", in a billable
                  # group; it is invalid on any other limit. If this field is not set, it
                  # defaults to 0, indicating that there is no free tier for this service.
                  #
                  # Used by group-based quotas only.
              "unit": "A String", # Specify the unit of the quota limit. It uses the same syntax as
                  # Metric.unit. The supported unit kinds are determined by the quota
                  # backend system.
                  #
                  # Here are some examples:
                  # * "1/min/{project}" for quota per minute per project.
                  #
                  # Note: the order of unit components is insignificant.
                  # The "1" at the beginning is required to follow the metric unit syntax.
              "description": "A String", # Optional. User-visible, extended description for this quota limit.
                  # Should be used only when more context is needed to understand this limit
                  # than provided by the limit's display name (see: `display_name`).
            },
          ],
        },
        "metrics": [ # Defines the metrics used by this service.
          { # Defines a metric type and its schema. Once a metric descriptor is created,
              # deleting or altering it stops data collection and makes the metric type's
              # existing data unusable.
            "description": "A String", # A detailed description of the metric, which can be used in documentation.
            "displayName": "A String", # A concise name for the metric, which can be displayed in user interfaces.
                # Use sentence case without an ending period, for example "Request count".
                # This field is optional but it is recommended to be set for any metrics
                # associated with user-visible concepts, such as Quota.
            "name": "A String", # The resource name of the metric descriptor.
            "metricKind": "A String", # Whether the metric records instantaneous values, changes to a value, etc.
                # Some combinations of `metric_kind` and `value_type` might not be supported.
            "valueType": "A String", # Whether the measurement is an integer, a floating-point number, etc.
                # Some combinations of `metric_kind` and `value_type` might not be supported.
            "labels": [ # The set of labels that can be used to describe a specific
                # instance of this metric type. For example, the
                # `appengine.googleapis.com/http/server/response_latencies` metric
                # type has a label for the HTTP response code, `response_code`, so
                # you can look at latencies for successful responses or just
                # for responses that failed.
              { # A description of a label.
                "valueType": "A String", # The type of data that can be assigned to the label.
                "description": "A String", # A human-readable description for the label.
                "key": "A String", # The label key.
              },
            ],
            "launchStage": "A String", # Optional. The launch stage of the metric definition.
            "type": "A String", # The metric type, including its DNS name prefix. The type is not
                # URL-encoded.  All user-defined metric types have the DNS name
                # `custom.googleapis.com` or `external.googleapis.com`.  Metric types should
                # use a natural hierarchical grouping. For example:
                #
                #     "custom.googleapis.com/invoice/paid/amount"
                #     "external.googleapis.com/prometheus/up"
                #     "appengine.googleapis.com/http/server/response_latencies"
            "unit": "A String", # The unit in which the metric value is reported. It is only applicable
                # if the `value_type` is `INT64`, `DOUBLE`, or `DISTRIBUTION`. The
                # supported units are a subset of [The Unified Code for Units of
                # Measure](http://unitsofmeasure.org/ucum.html) standard:
                #
                # **Basic units (UNIT)**
                #
                # * `bit`   bit
                # * `By`    byte
                # * `s`     second
                # * `min`   minute
                # * `h`     hour
                # * `d`     day
                #
                # **Prefixes (PREFIX)**
                #
                # * `k`     kilo    (10**3)
                # * `M`     mega    (10**6)
                # * `G`     giga    (10**9)
                # * `T`     tera    (10**12)
                # * `P`     peta    (10**15)
                # * `E`     exa     (10**18)
                # * `Z`     zetta   (10**21)
                # * `Y`     yotta   (10**24)
                # * `m`     milli   (10**-3)
                # * `u`     micro   (10**-6)
                # * `n`     nano    (10**-9)
                # * `p`     pico    (10**-12)
                # * `f`     femto   (10**-15)
                # * `a`     atto    (10**-18)
                # * `z`     zepto   (10**-21)
                # * `y`     yocto   (10**-24)
                # * `Ki`    kibi    (2**10)
                # * `Mi`    mebi    (2**20)
                # * `Gi`    gibi    (2**30)
                # * `Ti`    tebi    (2**40)
                #
                # **Grammar**
                #
                # The grammar also includes these connectors:
                #
                # * `/`    division (as an infix operator, e.g. `1/s`).
                # * `.`    multiplication (as an infix operator, e.g. `GBy.d`)
                #
                # The grammar for a unit is as follows:
                #
                #     Expression = Component { "." Component } { "/" Component } ;
                #
                #     Component = ( [ PREFIX ] UNIT | "%" ) [ Annotation ]
                #               | Annotation
                #               | "1"
                #               ;
                #
                #     Annotation = "{" NAME "}" ;
                #
                # Notes:
                #
                # * `Annotation` is just a comment if it follows a `UNIT` and is
                #    equivalent to `1` if it is used alone. For examples,
                #    `{requests}/s == 1/s`, `By{transmitted}/s == By/s`.
                # * `NAME` is a sequence of non-blank printable ASCII characters not
                #    containing '{' or '}'.
                # * `1` represents dimensionless value 1, such as in `1/s`.
                # * `%` represents dimensionless value 1/100, and annotates values giving
                #    a percentage.
            "metadata": { # Additional annotations that can be used to guide the usage of a metric. # Optional. Metadata which can be used to guide usage of the metric.
              "launchStage": "A String", # Deprecated. Please use the MetricDescriptor.launch_stage instead.
                  # The launch stage of the metric definition.
              "ingestDelay": "A String", # The delay of data points caused by ingestion. Data points older than this
                  # age are guaranteed to be ingested and available to be read, excluding
                  # data loss due to errors.
              "samplePeriod": "A String", # The sampling period of metric data points. For metrics which are written
                  # periodically, consecutive data points are stored at this time interval,
                  # excluding data loss due to errors. Metrics with a higher granularity have
                  # a smaller sampling period.
            },
          },
        ],
        "enums": [ # A list of all enum types included in this API service.  Enums
            # referenced directly or indirectly by the `apis` are automatically
            # included.  Enums which are not referenced but shall be included
            # should be listed here by name. Example:
            #
            #     enums:
            #     - name: google.someapi.v1.SomeEnum
          { # Enum type definition.
            "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
                # protobuf element, like the file in which it is defined.
              "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
                  # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
            },
            "enumvalue": [ # Enum value definitions.
              { # Enum value definition.
                "options": [ # Protocol buffer options.
                  { # A protocol buffer option, which can be attached to a message, field,
                      # enumeration, etc.
                    "name": "A String", # The option's name. For protobuf built-in options (options defined in
                        # descriptor.proto), this is the short name. For example, `"map_entry"`.
                        # For custom options, it should be the fully-qualified name. For example,
                        # `"google.api.http"`.
                    "value": { # The option's value packed in an Any message. If the value is a primitive,
                        # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                        # should be used. If the value is an enum, it should be stored as an int32
                        # value using the google.protobuf.Int32Value type.
                      "a_key": "", # Properties of the object. Contains field @type with type URL.
                    },
                  },
                ],
                "name": "A String", # Enum value name.
                "number": 42, # Enum value number.
              },
            ],
            "options": [ # Protocol buffer options.
              { # A protocol buffer option, which can be attached to a message, field,
                  # enumeration, etc.
                "name": "A String", # The option's name. For protobuf built-in options (options defined in
                    # descriptor.proto), this is the short name. For example, `"map_entry"`.
                    # For custom options, it should be the fully-qualified name. For example,
                    # `"google.api.http"`.
                "value": { # The option's value packed in an Any message. If the value is a primitive,
                    # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                    # should be used. If the value is an enum, it should be stored as an int32
                    # value using the google.protobuf.Int32Value type.
                  "a_key": "", # Properties of the object. Contains field @type with type URL.
                },
              },
            ],
            "name": "A String", # Enum type name.
            "syntax": "A String", # The source syntax.
          },
        ],
        "types": [ # A list of all proto message types included in this API service.
            # Types referenced directly or indirectly by the `apis` are
            # automatically included.  Messages which are not referenced but
            # shall be included, such as types used by the `google.protobuf.Any` type,
            # should be listed here by name. Example:
            #
            #     types:
            #     - name: google.protobuf.Int32
          { # A protocol buffer message type.
            "oneofs": [ # The list of types appearing in `oneof` definitions in this type.
              "A String",
            ],
            "name": "A String", # The fully qualified message name.
            "fields": [ # The list of fields.
              { # A single field of a message type.
                "kind": "A String", # The field type.
                "oneofIndex": 42, # The index of the field type in `Type.oneofs`, for message or enumeration
                    # types. The first type has index 1; zero means the type is not in the list.
                "typeUrl": "A String", # The field type URL, without the scheme, for message or enumeration
                    # types. Example: `"type.googleapis.com/google.protobuf.Timestamp"`.
                "name": "A String", # The field name.
                "defaultValue": "A String", # The string value of the default value of this field. Proto2 syntax only.
                "jsonName": "A String", # The field JSON name.
                "number": 42, # The field number.
                "cardinality": "A String", # The field cardinality.
                "options": [ # The protocol buffer options.
                  { # A protocol buffer option, which can be attached to a message, field,
                      # enumeration, etc.
                    "name": "A String", # The option's name. For protobuf built-in options (options defined in
                        # descriptor.proto), this is the short name. For example, `"map_entry"`.
                        # For custom options, it should be the fully-qualified name. For example,
                        # `"google.api.http"`.
                    "value": { # The option's value packed in an Any message. If the value is a primitive,
                        # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                        # should be used. If the value is an enum, it should be stored as an int32
                        # value using the google.protobuf.Int32Value type.
                      "a_key": "", # Properties of the object. Contains field @type with type URL.
                    },
                  },
                ],
                "packed": True or False, # Whether to use alternative packed wire representation.
              },
            ],
            "syntax": "A String", # The source syntax.
            "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
                # protobuf element, like the file in which it is defined.
              "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
                  # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
            },
            "options": [ # The protocol buffer options.
              { # A protocol buffer option, which can be attached to a message, field,
                  # enumeration, etc.
                "name": "A String", # The option's name. For protobuf built-in options (options defined in
                    # descriptor.proto), this is the short name. For example, `"map_entry"`.
                    # For custom options, it should be the fully-qualified name. For example,
                    # `"google.api.http"`.
                "value": { # The option's value packed in an Any message. If the value is a primitive,
                    # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                    # should be used. If the value is an enum, it should be stored as an int32
                    # value using the google.protobuf.Int32Value type.
                  "a_key": "", # Properties of the object. Contains field @type with type URL.
                },
              },
            ],
          },
        ],
        "logging": { # Logging configuration of the service. # Logging configuration.
            #
            # The following example shows how to configure logs to be sent to the
            # producer and consumer projects. In the example, the `activity_history`
            # log is sent to both the producer and consumer projects, whereas the
            # `purchase_history` log is only sent to the producer project.
            #
            #     monitored_resources:
            #     - type: library.googleapis.com/branch
            #       labels:
            #       - key: /city
            #         description: The city where the library branch is located in.
            #       - key: /name
            #         description: The name of the branch.
            #     logs:
            #     - name: activity_history
            #       labels:
            #       - key: /customer_id
            #     - name: purchase_history
            #     logging:
            #       producer_destinations:
            #       - monitored_resource: library.googleapis.com/branch
            #         logs:
            #         - activity_history
            #         - purchase_history
            #       consumer_destinations:
            #       - monitored_resource: library.googleapis.com/branch
            #         logs:
            #         - activity_history
          "producerDestinations": [ # Logging configurations for sending logs to the producer project.
              # There can be multiple producer destinations, each one must have a
              # different monitored resource type. A log can be used in at most
              # one producer destination.
            { # Configuration of a specific logging destination (the producer project
                # or the consumer project).
              "monitoredResource": "A String", # The monitored resource type. The type must be defined in the
                  # Service.monitored_resources section.
              "logs": [ # Names of the logs to be sent to this destination. Each name must
                  # be defined in the Service.logs section. If the log name is
                  # not a domain scoped name, it will be automatically prefixed with
                  # the service name followed by "/".
                "A String",
              ],
            },
          ],
          "consumerDestinations": [ # Logging configurations for sending logs to the consumer project.
              # There can be multiple consumer destinations, each one must have a
              # different monitored resource type. A log can be used in at most
              # one consumer destination.
            { # Configuration of a specific logging destination (the producer project
                # or the consumer project).
              "monitoredResource": "A String", # The monitored resource type. The type must be defined in the
                  # Service.monitored_resources section.
              "logs": [ # Names of the logs to be sent to this destination. Each name must
                  # be defined in the Service.logs section. If the log name is
                  # not a domain scoped name, it will be automatically prefixed with
                  # the service name followed by "/".
                "A String",
              ],
            },
          ],
        },
        "name": "A String", # The service name, which is a DNS-like logical identifier for the
            # service, such as `calendar.googleapis.com`. The service name
            # typically goes through DNS verification to make sure the owner
            # of the service also owns the DNS name.
        "documentation": { # `Documentation` provides the information for describing a service. # Additional API documentation.
            #
            # Example:
            # <pre><code>documentation:
            #   summary: >
            #     The Google Calendar API gives access
            #     to most calendar features.
            #   pages:
            #   - name: Overview
            #     content: &#40;== include google/foo/overview.md ==&#41;
            #   - name: Tutorial
            #     content: &#40;== include google/foo/tutorial.md ==&#41;
            #     subpages;
            #     - name: Java
            #       content: &#40;== include google/foo/tutorial_java.md ==&#41;
            #   rules:
            #   - selector: google.calendar.Calendar.Get
            #     description: >
            #       ...
            #   - selector: google.calendar.Calendar.Put
            #     description: >
            #       ...
            # </code></pre>
            # Documentation is provided in markdown syntax. In addition to
            # standard markdown features, definition lists, tables and fenced
            # code blocks are supported. Section headers can be provided and are
            # interpreted relative to the section nesting of the context where
            # a documentation fragment is embedded.
            #
            # Documentation from the IDL is merged with documentation defined
            # via the config at normalization time, where documentation provided
            # by config rules overrides IDL provided.
            #
            # A number of constructs specific to the API platform are supported
            # in documentation text.
            #
            # In order to reference a proto element, the following
            # notation can be used:
            # <pre><code>&#91;fully.qualified.proto.name]&#91;]</code></pre>
            # To override the display text used for the link, this can be used:
            # <pre><code>&#91;display text]&#91;fully.qualified.proto.name]</code></pre>
            # Text can be excluded from doc using the following notation:
            # <pre><code>&#40;-- internal comment --&#41;</code></pre>
            #
            # A few directives are available in documentation. Note that
            # directives must appear on a single line to be properly
            # identified. The `include` directive includes a markdown file from
            # an external source:
            # <pre><code>&#40;== include path/to/file ==&#41;</code></pre>
            # The `resource_for` directive marks a message to be the resource of
            # a collection in REST view. If it is not specified, tools attempt
            # to infer the resource from the operations in a collection:
            # <pre><code>&#40;== resource_for v1.shelves.books ==&#41;</code></pre>
            # The directive `suppress_warning` does not directly affect documentation
            # and is documented together with service config validation.
          "rules": [ # A list of documentation rules that apply to individual API elements.
              #
              # **NOTE:** All service configuration rules follow "last one wins" order.
            { # A documentation rule provides information about individual API elements.
              "description": "A String", # Description of the selected API(s).
              "deprecationDescription": "A String", # Deprecation description of the selected element(s). It can be provided if
                  # an element is marked as `deprecated`.
              "selector": "A String", # The selector is a comma-separated list of patterns. Each pattern is a
                  # qualified name of the element which may end in "*", indicating a wildcard.
                  # Wildcards are only allowed at the end and for a whole component of the
                  # qualified name, i.e. "foo.*" is ok, but not "foo.b*" or "foo.*.bar". A
                  # wildcard will match one or more components. To specify a default for all
                  # applicable elements, the whole pattern "*" is used.
            },
          ],
          "documentationRootUrl": "A String", # The URL to the root of documentation.
          "overview": "A String", # Declares a single overview page. For example:
              # <pre><code>documentation:
              #   summary: ...
              #   overview: &#40;== include overview.md ==&#41;
              # </code></pre>
              # This is a shortcut for the following declaration (using pages style):
              # <pre><code>documentation:
              #   summary: ...
              #   pages:
              #   - name: Overview
              #     content: &#40;== include overview.md ==&#41;
              # </code></pre>
              # Note: you cannot specify both `overview` field and `pages` field.
          "pages": [ # The top level pages for the documentation set.
            { # Represents a documentation page. A page can contain subpages to represent
                # nested documentation set structure.
              "content": "A String", # The Markdown content of the page. You can use <code>&#40;== include {path}
                  # ==&#41;</code> to include content from a Markdown file.
              "subpages": [ # Subpages of this page. The order of subpages specified here will be
                  # honored in the generated docset.
                # Object with schema name: Page
              ],
              "name": "A String", # The name of the page. It will be used as an identity of the page to
                  # generate URI of the page, text of the link to this page in navigation,
                  # etc. The full page name (start from the root page name to this page
                  # concatenated with `.`) can be used as reference to the page in your
                  # documentation. For example:
                  # <pre><code>pages:
                  # - name: Tutorial
                  #   content: &#40;== include tutorial.md ==&#41;
                  #   subpages:
                  #   - name: Java
                  #     content: &#40;== include tutorial_java.md ==&#41;
                  # </code></pre>
                  # You can reference `Java` page using Markdown reference link syntax:
                  # `Java`.
            },
          ],
          "summary": "A String", # A short summary of what the service does. Can only be provided by
              # plain text.
        },
        "sourceInfo": { # Source information used to create a Service Config # Output only. The source information for this configuration if available.
          "sourceFiles": [ # All files used during config generation.
            {
              "a_key": "", # Properties of the object. Contains field @type with type URL.
            },
          ],
        },
        "systemTypes": [ # A list of all proto message types included in this API service.
            # It serves similar purpose as [google.api.Service.types], except that
            # these types are not needed by user-defined APIs. Therefore, they will not
            # show up in the generated discovery doc. This field should only be used
            # to define system APIs in ESF.
          { # A protocol buffer message type.
            "oneofs": [ # The list of types appearing in `oneof` definitions in this type.
              "A String",
            ],
            "name": "A String", # The fully qualified message name.
            "fields": [ # The list of fields.
              { # A single field of a message type.
                "kind": "A String", # The field type.
                "oneofIndex": 42, # The index of the field type in `Type.oneofs`, for message or enumeration
                    # types. The first type has index 1; zero means the type is not in the list.
                "typeUrl": "A String", # The field type URL, without the scheme, for message or enumeration
                    # types. Example: `"type.googleapis.com/google.protobuf.Timestamp"`.
                "name": "A String", # The field name.
                "defaultValue": "A String", # The string value of the default value of this field. Proto2 syntax only.
                "jsonName": "A String", # The field JSON name.
                "number": 42, # The field number.
                "cardinality": "A String", # The field cardinality.
                "options": [ # The protocol buffer options.
                  { # A protocol buffer option, which can be attached to a message, field,
                      # enumeration, etc.
                    "name": "A String", # The option's name. For protobuf built-in options (options defined in
                        # descriptor.proto), this is the short name. For example, `"map_entry"`.
                        # For custom options, it should be the fully-qualified name. For example,
                        # `"google.api.http"`.
                    "value": { # The option's value packed in an Any message. If the value is a primitive,
                        # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                        # should be used. If the value is an enum, it should be stored as an int32
                        # value using the google.protobuf.Int32Value type.
                      "a_key": "", # Properties of the object. Contains field @type with type URL.
                    },
                  },
                ],
                "packed": True or False, # Whether to use alternative packed wire representation.
              },
            ],
            "syntax": "A String", # The source syntax.
            "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
                # protobuf element, like the file in which it is defined.
              "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
                  # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
            },
            "options": [ # The protocol buffer options.
              { # A protocol buffer option, which can be attached to a message, field,
                  # enumeration, etc.
                "name": "A String", # The option's name. For protobuf built-in options (options defined in
                    # descriptor.proto), this is the short name. For example, `"map_entry"`.
                    # For custom options, it should be the fully-qualified name. For example,
                    # `"google.api.http"`.
                "value": { # The option's value packed in an Any message. If the value is a primitive,
                    # the corresponding wrapper type defined in google/protobuf/wrappers.proto
                    # should be used. If the value is an enum, it should be stored as an int32
                    # value using the google.protobuf.Int32Value type.
                  "a_key": "", # Properties of the object. Contains field @type with type URL.
                },
              },
            ],
          },
        ],
        "context": { # `Context` defines which contexts an API requests. # Context configuration.
            #
            # Example:
            #
            #     context:
            #       rules:
            #       - selector: "*"
            #         requested:
            #         - google.rpc.context.ProjectContext
            #         - google.rpc.context.OriginContext
            #
            # The above specifies that all methods in the API request
            # `google.rpc.context.ProjectContext` and
            # `google.rpc.context.OriginContext`.
            #
            # Available context types are defined in package
            # `google.rpc.context`.
            #
            # This also provides mechanism to whitelist any protobuf message extension that
            # can be sent in grpc metadata using “x-goog-ext-<extension_id>-bin” and
            # “x-goog-ext-<extension_id>-jspb” format. For example, list any service
            # specific protobuf types that can appear in grpc metadata as follows in your
            # yaml file:
            #
            # Example:
            #
            #     context:
            #       rules:
            #        - selector: "google.example.library.v1.LibraryService.CreateBook"
            #          allowed_request_extensions:
            #          - google.foo.v1.NewExtension
            #          allowed_response_extensions:
            #          - google.foo.v1.NewExtension
            #
            # You can also specify extension ID instead of fully qualified extension name
            # here.
          "rules": [ # A list of RPC context rules that apply to individual API methods.
              #
              # **NOTE:** All service configuration rules follow "last one wins" order.
            { # A context rule provides information about the context for an individual API
                # element.
              "provided": [ # A list of full type names of provided contexts.
                "A String",
              ],
              "allowedResponseExtensions": [ # A list of full type names or extension IDs of extensions allowed in grpc
                  # side channel from backend to client.
                "A String",
              ],
              "selector": "A String", # Selects the methods to which this rule applies.
                  #
                  # Refer to selector for syntax details.
              "allowedRequestExtensions": [ # A list of full type names or extension IDs of extensions allowed in grpc
                  # side channel from client to backend.
                "A String",
              ],
              "requested": [ # A list of full type names of requested contexts.
                "A String",
              ],
            },
          ],
        },
        "endpoints": [ # Configuration for network endpoints.  If this is empty, then an endpoint
            # with the same name as the service is automatically generated to service all
            # defined APIs.
          { # `Endpoint` describes a network endpoint that serves a set of APIs.
              # A service may expose any number of endpoints, and all endpoints share the
              # same service configuration, such as quota configuration and monitoring
              # configuration.
              #
              # Example service configuration:
              #
              #     name: library-example.googleapis.com
              #     endpoints:
              #       # Below entry makes 'google.example.library.v1.Library'
              #       # API be served from endpoint address library-example.googleapis.com.
              #       # It also allows HTTP OPTIONS calls to be passed to the backend, for
              #       # it to decide whether the subsequent cross-origin request is
              #       # allowed to proceed.
              #     - name: library-example.googleapis.com
              #       allow_cors: true
            "allowCors": True or False, # Allowing
                # [CORS](https://en.wikipedia.org/wiki/Cross-origin_resource_sharing), aka
                # cross-domain traffic, would allow the backends served from this endpoint to
                # receive and respond to HTTP OPTIONS requests. The response will be used by
                # the browser to determine whether the subsequent cross-origin request is
                # allowed to proceed.
            "target": "A String", # The specification of an Internet routable address of API frontend that will
                # handle requests to this [API
                # Endpoint](https://cloud.google.com/apis/design/glossary). It should be
                # either a valid IPv4 address or a fully-qualified domain name. For example,
                # "8.8.8.8" or "myservice.appspot.com".
            "features": [ # The list of features enabled on this endpoint.
              "A String",
            ],
            "name": "A String", # The canonical name of this endpoint.
            "aliases": [ # DEPRECATED: This field is no longer supported. Instead of using aliases,
                # please specify multiple google.api.Endpoint for each of the intended
                # aliases.
                #
                # Additional names that this endpoint will be hosted on.
              "A String",
            ],
          },
        ],
      },
    ],
  }</pre>
</div>

<div class="method">
    <code class="details" id="list_next">list_next(previous_request, previous_response)</code>
  <pre>Retrieves the next page of results.

Args:
  previous_request: The request for the previous page. (required)
  previous_response: The response from the request for the previous page. (required)

Returns:
  A request object that you can call 'execute()' on to request the next
  page. Returns None if there are no more items in the collection.
    </pre>
</div>

<div class="method">
    <code class="details" id="submit">submit(serviceName, body, x__xgafv=None)</code>
  <pre>Creates a new service configuration (version) for a managed service based
on
user-supplied configuration source files (for example: OpenAPI
Specification). This method stores the source configurations as well as the
generated service configuration. To rollout the service configuration to
other services,
please call CreateServiceRollout.

Only the 100 most recent configuration sources and ones referenced by
existing service configurtions are kept for each service. The rest will be
deleted eventually.

Operation<response: SubmitConfigSourceResponse>

Args:
  serviceName: string, The name of the service.  See the [overview](/service-management/overview)
for naming requirements.  For example: `example.googleapis.com`. (required)
  body: object, The request body. (required)
    The object takes the form of:

{ # Request message for SubmitConfigSource method.
    "validateOnly": True or False, # Optional. If set, this will result in the generation of a
        # `google.api.Service` configuration based on the `ConfigSource` provided,
        # but the generated config and the sources will NOT be persisted.
    "configSource": { # Represents a source file which is used to generate the service configuration # The source configuration for the service.
        # defined by `google.api.Service`.
      "files": [ # Set of source configuration files that are used to generate a service
          # configuration (`google.api.Service`).
        { # Generic specification of a source configuration file
          "fileContents": "A String", # The bytes that constitute the file.
          "fileType": "A String", # The type of configuration file this represents.
          "filePath": "A String", # The file name of the configuration file (full or relative path).
        },
      ],
      "id": "A String", # A unique ID for a specific instance of this message, typically assigned
          # by the client for tracking purpose. If empty, the server may choose to
          # generate one instead.
    },
  }

  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # This resource represents a long-running operation that is the result of a
      # network API call.
    "response": { # The normal response of the operation in case of success.  If the original
        # method returns no data on success, such as `Delete`, the response is
        # `google.protobuf.Empty`.  If the original method is standard
        # `Get`/`Create`/`Update`, the response should be the resource.  For other
        # methods, the response should have the type `XxxResponse`, where `Xxx`
        # is the original method name.  For example, if the original method name
        # is `TakeSnapshot()`, the inferred response type is
        # `TakeSnapshotResponse`.
      "a_key": "", # Properties of the object. Contains field @type with type URL.
    },
    "metadata": { # Service-specific metadata associated with the operation.  It typically
        # contains progress information and common metadata such as create time.
        # Some services might not provide such metadata.  Any method that returns a
        # long-running operation should document the metadata type, if any.
      "a_key": "", # Properties of the object. Contains field @type with type URL.
    },
    "done": True or False, # If the value is `false`, it means the operation is still in progress.
        # If `true`, the operation is completed, and either `error` or `response` is
        # available.
    "name": "A String", # The server-assigned name, which is only unique within the same service that
        # originally returns it. If you use the default HTTP mapping, the
        # `name` should be a resource name ending with `operations/{unique_id}`.
    "error": { # The `Status` type defines a logical error model that is suitable for # The error result of the operation in case of failure or cancellation.
        # different programming environments, including REST APIs and RPC APIs. It is
        # used by [gRPC](https://github.com/grpc). Each `Status` message contains
        # three pieces of data: error code, error message, and error details.
        #
        # You can find out more about this error model and how to work with it in the
        # [API Design Guide](https://cloud.google.com/apis/design/errors).
      "message": "A String", # A developer-facing error message, which should be in English. Any
          # user-facing error message should be localized and sent in the
          # google.rpc.Status.details field, or localized by the client.
      "code": 42, # The status code, which should be an enum value of google.rpc.Code.
      "details": [ # A list of messages that carry the error details.  There is a common set of
          # message types for APIs to use.
        {
          "a_key": "", # Properties of the object. Contains field @type with type URL.
        },
      ],
    },
  }</pre>
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