def VerifyStructure(self, parser_mediator, lines):
    """Verifies that this is a syslog-formatted 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.
    """
    return (re.match(self._VERIFICATION_REGEX, lines) or
            re.match(self._CHROMEOS_VERIFICATION_REGEX, lines)) is not None