code: def _ParseNoHeaderSingleLine(self, parser_mediator, structure):
      
      if not self._last_event_data:
        logger.debug('SkyDrive, found isolated line with no previous events')
        return
  
      event_data = SkyDriveOldLogEventData()
      event_data.offset = self._last_event_data.offset
      event_data.text = structure.text
  
      event = time_events.DateTimeValuesEvent(
          self._last_date_time, definitions.TIME_DESCRIPTION_ADDED)
      parser_mediator.ProduceEventWithEventData(event, event_data)
  
      # TODO think to a possible refactoring for the non-header lines.
      self._last_date_time = None
      self._last_event_data = None
docs: Parse an isolated header line and store appropriate attributes.
  
      Args:
        parser_mediator (ParserMediator): mediates interactions between parsers
            and other components, such as storage and dfvfs.
        structure (pyparsing.ParseResults): structure of tokens derived from
            a line of a text file.