code: @Override
      public DescribeLogStreamsResult describeLogStreams(DescribeLogStreamsRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeLogStreams(request);
      }
docs: <p>
  Lists the log streams for the specified log group. You can list all the log streams or filter the results by
  prefix. You can also control how the results are ordered.
  </p>
  <p>
  This operation has a limit of five transactions per second, after which transactions are throttled.
  </p>
  
  @param describeLogStreamsRequest
  @return Result of the DescribeLogStreams operation returned by the service.
  @throws InvalidParameterException
  A parameter is specified incorrectly.
  @throws ResourceNotFoundException
  The specified resource does not exist.
  @throws ServiceUnavailableException
  The service cannot complete the request.
  @sample AWSLogs.DescribeLogStreams
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/logs-2014-03-28/DescribeLogStreams" target="_top">AWS API
  Documentation</a>