rpc UpdateInstance(UpdateInstanceRequest) returns (google.longrunning.Operation) {
    option (google.api.http) = {
      patch: "/v1/{instance.name=projects/*/locations/*/instances/*}"
      body: "instance"
    };
    option (google.api.method_signature) = "update_mask,instance";
    option (google.longrunning.operation_info) = {
      response_type: "google.cloud.redis.v1.Instance"
      metadata_type: "google.cloud.redis.v1.OperationMetadata"
    };
  }