docs: def _update_events(self):
          """Update our cached list of latest activity events."""
          events = self._skybell.dev_cache(self, CONST.EVENT) or {}
  
          for activity in self._activities:
              event = activity.get(CONST.EVENT)
              created_at = activity.get(CONST.CREATED_AT)
  
              old_event = events.get(event)
  
              if old_event and created_at < old_event.get(CONST.CREATED_AT):
                  continue
              else:
                  events[event] = activity
  
          self._skybell.update_dev_cache(
              self,
              {
                  CONST.EVENT: events
              })