code: def VerifyStructure(self, parser_mediator, lines):
      
      try:
        structure = self._GDS_LINE.parseString(lines)
      except pyparsing.ParseException as exception:
        logger.debug('Not a Google Drive Sync log file: {0!s}'.format(exception))
        return False
  
      date_time = dfdatetime_time_elements.TimeElementsInMilliseconds()
  
      try:
        datetime_iso8601 = self._GetISO8601String(structure.date_time)
        date_time.CopyFromStringISO8601(datetime_iso8601)
      except ValueError as exception:
        logger.debug((
            'Not a Google Drive Sync log file, invalid date/time: {0!s} '
            'with error: {1!s}').format(structure.date_time, exception))
        return False
  
      return True
docs: Verify that this file is a Google Drive Sync log file.
  
      Args:
        parser_mediator (ParserMediator): mediates interactions between parsers
            and other components, such as storage and dfvfs.
        lines (str): one or more lines from the text file.
  
      Returns:
        bool: True if this is the correct parser, False otherwise.