code: @Override
      public DownloadDBLogFilePortionResult downloadDBLogFilePortion(DownloadDBLogFilePortionRequest request) {
          request = beforeClientExecution(request);
          return executeDownloadDBLogFilePortion(request);
      }
docs: <p>
  Downloads all or a portion of the specified log file, up to 1 MB in size.
  </p>
  
  @param downloadDBLogFilePortionRequest
  @return Result of the DownloadDBLogFilePortion operation returned by the service.
  @throws DBInstanceNotFoundException
  <i>DBInstanceIdentifier</i> doesn't refer to an existing DB instance.
  @throws DBLogFileNotFoundException
  <i>LogFileName</i> doesn't refer to an existing DB log file.
  @sample AmazonRDS.DownloadDBLogFilePortion
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/rds-2014-10-31/DownloadDBLogFilePortion" target="_top">AWS
  API Documentation</a>