code: def ExtractEvents(self, parser_mediator, registry_key, **kwargs):
      
      mru_values_dict = {}
      for subkey in registry_key.GetSubkeys():
        username_value = subkey.GetValueByName('UsernameHint')
  
        if (username_value and username_value.data and
            username_value.DataIsString()):
          username = username_value.GetDataAsObject()
        else:
          username = 'N/A'
  
        mru_values_dict[subkey.name] = username
  
        event_data = windows_events.WindowsRegistryEventData()
        event_data.key_path = subkey.path
        event_data.offset = subkey.offset
        event_data.regvalue = {'Username hint': username}
        event_data.source_append = self._SOURCE_APPEND
  
        event = time_events.DateTimeValuesEvent(
            subkey.last_written_time, definitions.TIME_DESCRIPTION_WRITTEN)
        parser_mediator.ProduceEventWithEventData(event, event_data)
  
      event_data = windows_events.WindowsRegistryEventData()
      event_data.key_path = registry_key.path
      event_data.offset = registry_key.offset
      event_data.regvalue = mru_values_dict
      event_data.source_append = self._SOURCE_APPEND
  
      event = time_events.DateTimeValuesEvent(
          registry_key.last_written_time, definitions.TIME_DESCRIPTION_WRITTEN)
      parser_mediator.ProduceEventWithEventData(event, event_data)
docs: Extracts events from a Terminal Server Client Windows Registry key.
  
      Args:
        parser_mediator (ParserMediator): mediates interactions between parsers
            and other components, such as storage and dfvfs.
        registry_key (dfwinreg.WinRegistryKey): Windows Registry key.