code: @Override
      public DescribeClusterTracksResult describeClusterTracks(DescribeClusterTracksRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeClusterTracks(request);
      }
docs: <p>
  Returns a list of all the available maintenance tracks.
  </p>
  
  @param describeClusterTracksRequest
  @return Result of the DescribeClusterTracks operation returned by the service.
  @throws InvalidClusterTrackException
  The provided cluster track name is not valid.
  @throws UnauthorizedOperationException
  Your account is not authorized to perform the requested operation.
  @sample AmazonRedshift.DescribeClusterTracks
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/redshift-2012-12-01/DescribeClusterTracks" target="_top">AWS
  API Documentation</a>