code: def share(self):
      shared = super().share()
      shared["opt"] = self.opt
      shared["retriever"] = self.retriever
      shared["selector"] = self.selector.share()
      shared["sent_tok"] = self.sent_tok
      shared["wiki_map"] = self.wiki_map
      return shared
  
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  from parlai.core.agents import Agent, create_agent, create_agent_from_shared
  from parlai.core.torch_ranker_agent import TorchRankerAgent
  from parlai.tasks.wizard_of_wikipedia.agents import TOKEN_KNOWLEDGE
  from parlai.zoo.wizard_of_wikipedia.knowledge_retriever import download
  import json
  import os
label_desc: Use image node_id 14 for calling the KnowledgeRetrieverAgent obj's underlying member method code with example usage: obj.share() and returns: shared