code: @Override
      public DescribeTaskSetsResult describeTaskSets(DescribeTaskSetsRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeTaskSets(request);
      }
docs: <p>
  Describes the task sets in the specified cluster and service. This is used when a service uses the
  <code>EXTERNAL</code> deployment controller type. For more information, see <a
  href="http://docs.aws.amazon.com/AmazonECS/latest/developerguide/deployment-types.html">Amazon ECS Deployment
  Types</a> in the <i>Amazon Elastic Container Service Developer Guide</i>.
  </p>
  
  @param describeTaskSetsRequest
  @return Result of the DescribeTaskSets operation returned by the service.
  @throws ServerException
  These errors are usually caused by a server issue.
  @throws ClientException
  These errors are usually caused by a client action, such as using an action or resource on behalf of a
  user that doesn't have permissions to use the action or resource, or specifying an identifier that is not
  valid.
  @throws InvalidParameterException
  The specified parameter is invalid. Review the available parameters for the API request.
  @throws ClusterNotFoundException
  The specified cluster could not be found. You can view your available clusters with <a>ListClusters</a>.
  Amazon ECS clusters are Region-specific.
  @throws UnsupportedFeatureException
  The specified task is not supported in this Region.
  @throws AccessDeniedException
  You do not have authorization to perform the requested action.
  @throws ServiceNotFoundException
  The specified service could not be found. You can view your available services with <a>ListServices</a>.
  Amazon ECS services are cluster-specific and Region-specific.
  @throws ServiceNotActiveException
  The specified service is not active. You can't update a service that is inactive. If you have previously
  deleted a service, you can re-create it with <a>CreateService</a>.
  @sample AmazonECS.DescribeTaskSets
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ecs-2014-11-13/DescribeTaskSets" target="_top">AWS API
  Documentation</a>