code: @Override
      public ListChangeSetsResult listChangeSets(ListChangeSetsRequest request) {
          request = beforeClientExecution(request);
          return executeListChangeSets(request);
      }
docs: <p>
  Returns the ID and status of each active change set for a stack. For example, AWS CloudFormation lists change
  sets that are in the <code>CREATE_IN_PROGRESS</code> or <code>CREATE_PENDING</code> state.
  </p>
  
  @param listChangeSetsRequest
  The input for the <a>ListChangeSets</a> action.
  @return Result of the ListChangeSets operation returned by the service.
  @sample AmazonCloudFormation.ListChangeSets
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/cloudformation-2010-05-15/ListChangeSets" target="_top">AWS
  API Documentation</a>