Resources referenced by name but not used directly generate helper methods #637

message Squid {
  option (google.api.resource) = {
    type: "animalia.cephalopoda.com/Squid"
    pattern: "zones/{zone}/squids/{squid}"
  };
  string name = 1;
}

message CreateSquidRequest {
  string name = 1 {
    (google.api.resource_reference) = {
      type: "animalia.cephalopoda.com/Squid"
    }
  };
}

message CreateSquidResponse {}

service SquidService {
  rpc CreateSquid(CreateSquidResponse) returns CreateSquidResponse {
    option (google.api.method_signature) = "name";
  }
}