293     bool operator()(const FieldKey& lhs, const FieldKey& rhs) const {  in operator()
294       if (lhs.class_descriptor != rhs.class_descriptor) {  in operator()
295         return lhs.class_descriptor < rhs.class_descriptor;  in operator()
297       if (lhs.name != rhs.name) {  in operator()
298         return lhs.name < rhs.name;  in operator()
300       return lhs.type < rhs.type;  in operator()
310     bool operator()(const ProtoKey& lhs, const ProtoKey& rhs) const {  in operator()
311       if (lhs.return_type != rhs.return_type) {  in operator()
312         return lhs.return_type < rhs.return_type;  in operator()
314       size_t min_args = std::min(lhs.args.size(), rhs.args.size());  in operator()
316         if (lhs.args[i] != rhs.args[i]) {  in operator()
317           return lhs.args[i] < rhs.args[i];  in operator()
320       return lhs.args.size() < rhs.args.size();  in operator()
330     bool operator()(const MethodKey& lhs, const MethodKey& rhs) const {  in operator()
331       if (lhs.class_descriptor != rhs.class_descriptor) {  in operator()
332         return lhs.class_descriptor < rhs.class_descriptor;  in operator()
334       if (lhs.name != rhs.name) {  in operator()
335         return lhs.name < rhs.name;  in operator()
337       return ProtoKeyComparator()(*lhs.proto, *rhs.proto);  in operator()