code: def act(self):
      obs = self.observation
      if obs is None:
          return {"text": "Nothing to repeat yet."}
      reply = {}
      reply["id"] = self.getID()
      labels = obs.get("labels", obs.get("eval_labels", None))
      if labels:
          if random.random() >= self.cantAnswerPercent:
              if self.returnOneRandomAnswer:
                  reply["text"] = labels[random.randrange(len(labels))]
              else:
                  reply["text"] = ", ".join(labels)
          else:
              # Some 'self.cantAnswerPercent' percentage of the time
              # the agent does not answer.
              reply["text"] = self.cantAnswerMessage
      else:
          reply["text"] = self.cantAnswerMessage
      reply["episode_done"] = False
      return Message(reply)
  
file_path: ParlAI/parlai/agents/repeat_label/repeat_label.py
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  import random
  from parlai.core.agents import Agent
  from parlai.core.message import Message
label_desc: Use image node_id 3 for calling the RepeatLabelAgent obj's underlying member method code with example usage: obj.act() and returns: Message, dict