class_docstr: Simple interactive world involving just two agents talking.
  
  In more sophisticated worlds the environment could supply information, e.g. in
  tasks/convai2 both agents are given personas, so a world class should be written
  especially for those cases for given tasks.
docstr: Override to load or instantiate contexts to be used to seed the chat.
docstr_tok: ["Override","to","load","or","instantiate","contexts","to","be","used","to","seed","the","chat","."]
code: def init_contexts(self, shared=None):
      """
      Override to load or instantiate contexts to be used to seed the chat.
      """
      pass
  
file_path: ParlAI/parlai/tasks/interactive/worlds.py
imports: from copy import deepcopy
  from typing import Optional
  from parlai.core.opt import Opt
  from parlai.core.params import ParlaiParser
  from parlai.core.worlds import DialogPartnerWorld, validate
  from parlai.core.message import Message
label_desc: Use image node_id 3 for calling the InteractiveWorld obj's underlying member method code with example usage: obj.init_contexts(shared) without return types