code: def __init__(self, opt, shared=None):
      super().__init__(opt, shared, extras=True)
  
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  import json
  import os
  from parlai.core.message import Message
  from parlai.core.teachers import FixedDialogTeacher
  from .build import build
  from parlai.tasks.multinli.agents import convert_to_dialogData
  from parlai.utils.io import PathManager
label_desc: Use image node_id 1 to create a new ExtrasTeacher object from inherited base classes: DialogueNliTeacher with example: obj = ExtrasTeacher(opt, shared)