code: def get_history_str(self):
      return f"{self.gpt3Agent.init_prompt}{self.gpt3Agent.turns}"
  
file_path: ParlAI/parlai/agents/gpt3/gpt3.py
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  from parlai.core.agents import Agent
  from parlai.core.message import Message
label_desc: Use image node_id 3 for calling the FakeHistory obj's underlying member method code with example usage: obj.get_history_str() and returns: self, self