189     private final Map<String, Connection> mConnectionById = new ConcurrentHashMap<>();  field in ConnectionService
1703         if (mConnectionById.containsKey(callId)) {  in disconnect()
1712         if (mConnectionById.containsKey(callId)) {  in hold()
1721         if (mConnectionById.containsKey(callId)) {  in unhold()
1730         if (mConnectionById.containsKey(callId)) {  in onCallAudioStateChanged()
1741         if (mConnectionById.containsKey(callId)) {  in playDtmfTone()
1750         if (mConnectionById.containsKey(callId)) {  in stopDtmfTone()
1894         if (mConnectionById.containsKey(callId)) {  in handleExtrasChanged()
1903         if (mConnectionById.containsKey(callId)) {  in startRtt()
1912         if (mConnectionById.containsKey(callId)) {  in stopRtt()
1921         if (mConnectionById.containsKey(callId)) {  in handleRttUpgradeResponse()
2160         return mConnectionById.values();  in getAllConnections()
2525         mConnectionById.put(callId, connection);  in addConnection()
2539             mConnectionById.remove(id);  in removeConnection()
2585         if (callId != null && mConnectionById.containsKey(callId)) {  in findConnectionForAction()
2586             return mConnectionById.get(callId);  in findConnectionForAction()