class_docstr: Example one person world that talks to a provided agent (bot).
class_docstr_tok: ["Example","one","person","world","that","talks","to","a","provided","agent","(","bot",")","."]
code: def shutdown(self):
      self.agent.shutdown()
  
imports: from parlai.core.worlds import World
  from parlai.chat_service.services.messenger.worlds import OnboardWorld
  from parlai.core.agents import create_agent_from_shared
label_desc: Use image node_id 6 for calling the MessengerBotChatTaskWorld obj's underlying member method code with example usage: obj.shutdown() without return types