code: @Override
      public RunPipelineActivityResult runPipelineActivity(RunPipelineActivityRequest request) {
          request = beforeClientExecution(request);
          return executeRunPipelineActivity(request);
      }
docs: <p>
  Simulates the results of running a pipeline activity on a message payload.
  </p>
  
  @param runPipelineActivityRequest
  @return Result of the RunPipelineActivity operation returned by the service.
  @throws InvalidRequestException
  The request was not valid.
  @throws InternalFailureException
  There was an internal failure.
  @throws ServiceUnavailableException
  The service is temporarily unavailable.
  @throws ThrottlingException
  The request was denied due to request throttling.
  @sample AWSIoTAnalytics.RunPipelineActivity
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/iotanalytics-2017-11-27/RunPipelineActivity"
  target="_top">AWS API Documentation</a>