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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _ParseLogonApplications(self, parser_mediator, registry_key):
 """Parses the registered logon applications. Args: parser_mediator (ParserMediator):
 mediates interactions between parsers and other components, such as storage and dfvfs. registry_key (dfwinreg.WinRegistryKey):
 Windows Registry key. """

    for application in self._LOGON_APPLICATIONS:
      command_value = registry_key.GetValueByName(application)
      if not command_value:
        continue

      values_dict = {
          'Application': application,
          'Command': command_value.GetDataAsObject(),
          'Trigger': 'Logon'}

      event_data = windows_events.WindowsRegistryEventData()
      event_data.key_path = registry_key.path
      event_data.offset = registry_key.offset
      event_data.regvalue = values_dict
      event_data.source_append = ': Winlogon'

      event = time_events.DateTimeValuesEvent(
          registry_key.last_written_time, definitions.TIME_DESCRIPTION_WRITTEN)
      parser_mediator.ProduceEventWithEventData(event, event_data)