code: def GetEntries(self, parser_mediator, match=None, **unused_kwargs):
      
      backup_alias_map = self._GetDataTypeMap('timemachine_backup_alias')
  
      destinations = match.get('Destinations', [])
      for destination in destinations:
        backup_alias_data = destination.get('BackupAlias', b'')
        try:
          backup_alias = self._ReadStructureFromByteStream(
              backup_alias_data, 0, backup_alias_map)
          alias = backup_alias.string
  
        except (ValueError, errors.ParseError) as exception:
          parser_mediator.ProduceExtractionWarning(
              'unable to parse backup alias value with error: {0!s}'.format(
                  exception))
          alias = 'Unknown alias'
  
        destination_identifier = (
            destination.get('DestinationID', None) or 'Unknown device')
  
        event_data = plist_event.PlistTimeEventData()
        event_data.desc = 'TimeMachine Backup in {0:s} ({1:s})'.format(
            alias, destination_identifier)
        event_data.key = 'item/SnapshotDates'
        event_data.root = '/Destinations'
  
        snapshot_dates = destination.get('SnapshotDates', [])
        for datetime_value in snapshot_dates:
          event = time_events.PythonDatetimeEvent(
              datetime_value, definitions.TIME_DESCRIPTION_WRITTEN)
          parser_mediator.ProduceEventWithEventData(event, event_data)
docs: Extracts relevant TimeMachine entries.
  
      Args:
        parser_mediator (ParserMediator): mediates interactions between parsers
            and other components, such as storage and dfvfs.
        match (Optional[dict[str: object]]): keys extracted from PLIST_KEYS.