public Builder clearScenarioExecutionEndingRequest() {
        if (scenarioExecutionEndingRequestBuilder_ == null) {
          scenarioExecutionEndingRequest_ = main.Messages.ScenarioExecutionEndingRequest.getDefaultInstance();
          onChanged();
        } else {
          scenarioExecutionEndingRequestBuilder_.clear();
        }
        bitField0_ = (bitField0_ & ~0x00000040);
        return this;
      }