    serializeResponse(grpc::health::v1::HealthCheckResponse::ServingStatus status) {
      grpc::health::v1::HealthCheckResponse response;
      response.set_status(status);
      const auto data = Grpc::Common::serializeToGrpcFrame(response);
      auto ret = std::vector<uint8_t>(data->length(), 0);
      data->copyOut(0, data->length(), &ret[0]);
      return ret;
    }
    serializeResponse(grpc::health::v1::HealthCheckResponse::ServingStatus status) {
      grpc::health::v1::HealthCheckResponse response;
      response.set_status(status);
      const auto data = Grpc::Common::serializeToGrpcFrame(response);
      auto ret = std::vector<uint8_t>(data->length(), 0);
      data->copyOut(0, data->length(), &ret[0]);
      return ret;
    }