public Builder mergeResponse(JOutPiqi.callback_response value) {
        if (responseBuilder_ == null) {
          if (((bitField0_ & 0x00000001) == 0x00000001) &&
              response_ != JOutPiqi.callback_response.getDefaultInstance()) {
            response_ =
              JOutPiqi.callback_response.newBuilder(response_).mergeFrom(value).buildPartial();
          } else {
            response_ = value;
          }
          onChanged();
        } else {
          responseBuilder_.mergeFrom(value);
        }
        bitField0_ |= 0x00000001;
        return this;
      }