code: @Override
      public ListAttributesResult listAttributes(ListAttributesRequest request) {
          request = beforeClientExecution(request);
          return executeListAttributes(request);
      }
docs: <p>
  Lists the attributes for Amazon ECS resources within a specified target type and cluster. When you specify a
  target type and cluster, <code>ListAttributes</code> returns a list of attribute objects, one for each attribute
  on each resource. You can filter the list of results to a single attribute name to only return results that have
  that name. You can also filter the results by attribute name and value, for example, to see which container
  instances in a cluster are running a Linux AMI (<code>ecs.os-type=linux</code>).
  </p>
  
  @param listAttributesRequest
  @return Result of the ListAttributes operation returned by the service.
  @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 InvalidParameterException
  The specified parameter is invalid. Review the available parameters for the API request.
  @sample AmazonECS.ListAttributes
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ecs-2014-11-13/ListAttributes" target="_top">AWS API
  Documentation</a>