class_docstr: Logs actions/observations in a world and saves in a given format.
class_docstr_tok: ["Logs","actions\/observations","in","a","world","and","saves","in","a","given","format","."]
code: def reset_world(self, idx=0):
      if idx not in self._current_episodes:
          return
      self._add_episode(self._current_episodes[idx])
      self._current_episodes[idx] = []
  
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  from parlai.core.worlds import BatchWorld, DynamicBatchWorld
  from parlai.utils.misc import msg_to_str
  from parlai.utils.conversations import Conversations
  from parlai.utils.io import PathManager
  import parlai.utils.logging
  from parlai.core.message import Message
  import copy
  from tqdm import tqdm
label_desc: Use image node_id 5 for calling the WorldLogger obj's underlying member method code with example usage: obj.reset_world(idx) without return types