code: def dampenings(self, trigger_id, trigger_mode=None):
          
          if trigger_mode is not None:
              url = self._service_url(['triggers', trigger_id, 'dampenings', 'mode', trigger_mode])
          else:
              url = self._service_url(['triggers', trigger_id, 'dampenings'])
  
          data = self._get(url)
          return Dampening.list_to_object_list(data)
docs: Get all Dampenings for a Trigger (1 Dampening per mode).
  
          :param trigger_id: Trigger definition id to be retrieved.
          :param trigger_mode: Optional TriggerMode which is only fetched
          :type trigger_mode: TriggerMode
          :return: List of Dampening objects