code: @Override
      public ListQualificationRequestsResult listQualificationRequests(ListQualificationRequestsRequest request) {
          request = beforeClientExecution(request);
          return executeListQualificationRequests(request);
      }
docs: <p>
  The <code>ListQualificationRequests</code> operation retrieves requests for Qualifications of a particular
  Qualification type. The owner of the Qualification type calls this operation to poll for pending requests, and
  accepts them using the AcceptQualification operation.
  </p>
  
  @param listQualificationRequestsRequest
  @return Result of the ListQualificationRequests operation returned by the service.
  @throws ServiceException
  Amazon Mechanical Turk is temporarily unable to process your request. Try your call again.
  @throws RequestErrorException
  Your request is invalid.
  @sample AmazonMTurk.ListQualificationRequests
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/mturk-requester-2017-01-17/ListQualificationRequests"
  target="_top">AWS API Documentation</a>