public Builder mergeExecutionEndingRequest(main.Messages.ExecutionEndingRequest value) {
        if (executionEndingRequestBuilder_ == null) {
          if (((bitField0_ & 0x00000200) == 0x00000200) &&
              executionEndingRequest_ != main.Messages.ExecutionEndingRequest.getDefaultInstance()) {
            executionEndingRequest_ =
              main.Messages.ExecutionEndingRequest.newBuilder(executionEndingRequest_).mergeFrom(value).buildPartial();
          } else {
            executionEndingRequest_ = value;
          }
          onChanged();
        } else {
          executionEndingRequestBuilder_.mergeFrom(value);
        }
        bitField0_ |= 0x00000200;
        return this;
      }