class_docstr: World to handle moving agents to their proper places.
class_docstr_tok: ["World","to","handle","moving","agents","to","their","proper","places","."]
code: def episode_done(self):
      return self.episodeDone
  
imports: from parlai.core.worlds import World
  from parlai.chat_service.services.messenger.worlds import OnboardWorld
label_desc: Use image node_id 4 for calling the MessengerOverworld obj's underlying member method code with example usage: obj.episode_done() and returns: self