code: @Override
      public ListStackSetsResult listStackSets(ListStackSetsRequest request) {
          request = beforeClientExecution(request);
          return executeListStackSets(request);
      }
docs: <p>
  Returns summary information about stack sets that are associated with the user.
  </p>
  
  @param listStackSetsRequest
  @return Result of the ListStackSets operation returned by the service.
  @sample AmazonCloudFormation.ListStackSets
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/cloudformation-2010-05-15/ListStackSets" target="_top">AWS
  API Documentation</a>