code: @Override
      public QueryObjectsResult queryObjects(QueryObjectsRequest request) {
          request = beforeClientExecution(request);
          return executeQueryObjects(request);
      }
docs: <p>
  Queries the specified pipeline for the names of objects that match the specified set of conditions.
  </p>
  
  @param queryObjectsRequest
  Contains the parameters for QueryObjects.
  @return Result of the QueryObjects operation returned by the service.
  @throws PipelineNotFoundException
  The specified pipeline was not found. Verify that you used the correct user and account identifiers.
  @throws PipelineDeletedException
  The specified pipeline has been deleted.
  @throws InternalServiceErrorException
  An internal service error occurred.
  @throws InvalidRequestException
  The request was not valid. Verify that your request was properly formatted, that the signature was
  generated with the correct credentials, and that you haven't exceeded any of the service limits for your
  account.
  @sample DataPipeline.QueryObjects
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/datapipeline-2012-10-29/QueryObjects" target="_top">AWS API
  Documentation</a>