code: def check_actors(self):
          
          actors = []
          for actor in self.owner.actors:
              if actor.skip:
                  continue
              actors.append(actor)
          if len(actors) == 0:
              return
          for actor in actors:
              if not isinstance(actor, InputConsumer):
                  raise Exception("Actor does not accept any input: " + actor.full_name)
docs: Checks the actors of the owner. Raises an exception if invalid.