code: @Override
      public DescribeBackupResult describeBackup(DescribeBackupRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeBackup(request);
      }
docs: <p>
  Describes an existing backup of a table.
  </p>
  <p>
  You can call <code>DescribeBackup</code> at a maximum rate of 10 times per second.
  </p>
  
  @param describeBackupRequest
  @return Result of the DescribeBackup operation returned by the service.
  @throws BackupNotFoundException
  Backup not found for the given BackupARN.
  @throws InternalServerErrorException
  An error occurred on the server side.
  @sample AmazonDynamoDB.DescribeBackup
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/dynamodb-2012-08-10/DescribeBackup" target="_top">AWS API
  Documentation</a>