class_docstr: Example messenger onboarding that collects and returns data for use in the real task
  world.
class_docstr_tok: ["Example","messenger","onboarding","that","collects","and","returns","data","for","use","in","the","real","task","world","."]
code: def __init__(self, opt, agent):
      self.agent = agent
      self.episodeDone = False
      self.turn = 0
      self.data = {}
  
imports: from parlai.core.worlds import World
  from parlai.chat_service.services.messenger.worlds import OnboardWorld
label_desc: Use image node_id 1 to create a new MessengerOnboardDataOnboardWorld object from inherited base classes: OnboardWorld with example: obj = MessengerOnboardDataOnboardWorld(opt, agent)