docs: def EventsNotificationsGet(self, event_notification_id = -1):
          """
              Retrieve either all notifications or the notifications attached to a specific event.
              If successful, result can be obtained by a call to getResponse(), and should be a json string.
              
              @param event_notification_id (int) (optional) - Id of the event-notification to retrieve details from.
              
              @return (bool) - Boolean indicating whether EventsNotificationsGet was successful.
          """
          if event_notification_id == -1:
              url = '/events/notifications.json'
          else:
              url = '/events/notifications/{0}.json'.format(event_notification_id)
  
          if self.__SenseApiCall__(url, 'GET'):
              return True
          else:
              self.__error__ = "api call unsuccessful"
              return False