<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def Process(self, parser_mediator, date_time, syslog_tokens, **kwargs):
 """Processes the data structure produced by the parser. Args: parser_mediator (ParserMediator):
 mediates the interactions between parsers and other components, such as storage and abort signals. date_time (dfdatetime.DateTimeValues):
 date and time values. syslog_tokens (dict[str, str]):
 names of the fields extracted by the syslog parser and the matching grammar, and values are the values of those fields. Raises: AttributeError: If the syslog_tokens do not include a 'body' attribute. WrongPlugin: If the plugin is unable to parse the syslog tokens. """

    body = syslog_tokens.get('body', None)
    if not body:
      raise AttributeError('Missing required attribute: body')

    for key, grammar in iter(self.MESSAGE_GRAMMARS):
      try:
        tokens = grammar.parseString(body)
        syslog_tokens.update(tokens.asDict())
        self.ParseMessage(parser_mediator, key, date_time, syslog_tokens)
        return

      except pyparsing.ParseException:
        pass

    raise errors.WrongPlugin('Unable to create event from: {0:s}'.format(body))