code: @Override
      public DescribeDestinationsResult describeDestinations(DescribeDestinationsRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeDestinations(request);
      }
docs: <p>
  Lists all your destinations. The results are ASCII-sorted by destination name.
  </p>
  
  @param describeDestinationsRequest
  @return Result of the DescribeDestinations operation returned by the service.
  @throws InvalidParameterException
  A parameter is specified incorrectly.
  @throws ServiceUnavailableException
  The service cannot complete the request.
  @sample AWSLogs.DescribeDestinations
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/logs-2014-03-28/DescribeDestinations" target="_top">AWS API
  Documentation</a>