code: def _iterate_over_conversations(self, domains, intent):
      for domain in domains:
          data_folder = get_processed_multidogo_folder(
              self.dpath, domain, self.fold, intent
          )
          for filename in os.listdir(data_folder):
              if filename.endswith(".json"):
                  with open(data_folder + "/" + filename) as f:
                      data = json.load(f)
                      for conv_id, value in data.items():
                          yield conv_id, domain, value
  
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  import copy
  import json
  import os
  from parlai.core.opt import Opt
  from parlai.utils.data import DatatypeHelper
  import parlai.core.tod.tod_core
  import parlai.core.tod.tod_agents
  import parlai.tasks.multidogo.build
  from parlai.tasks.multidogo.build import get_processed_multidogo_folder
  from parlai.tasks.multidogo.build import DOMAINS, SENTENCE_INTENT, TURN_INTENT, TURN_AND_SENTENCE_INTENT
label_desc: Use image node_id 4 for calling the MultidogoParser obj's underlying member method code with example usage: obj._iterate_over_conversations(domains, intent) without return types