code: def _process_event(self, event):
          
          if event.get('user'):
              event.user = self.lookup_user(event.get('user'))
  
          if event.get('channel'):
              event.channel = self.lookup_channel(event.get('channel'))
  
          if self.user.id in event.mentions:
              event.mentions_me = True
  
          event.mentions = [ self.lookup_user(uid) for uid in event.mentions ]
  
          return event
docs: Extend event object with User and Channel objects