code: def dictionary_class():
      return WizardDictAgent
  
file_path: ParlAI/projects/wizard_of_wikipedia/wizard_transformer_ranker/wizard_transformer_ranker.py
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  from parlai.agents.transformer.transformer import TransformerRankerAgent
  from .wizard_dict import WizardDictAgent
  from parlai.utils.io import PathManager
  import numpy
  import torch
label_desc: Use image node_id 1 for calling the WizardTransformerRankerAgent obj's underlying member method code with example usage: obj.dictionary_class() and returns: WizardDictAgent