code: def __init__(self: T, *args, **kwargs):
      self.subs: Dict[int, T] = kwargs.pop("subs")
  
      def _default_callback(message, socketID):
          logging.warning(
              f"No callback defined for new WebSocket messages."
          )
  
      self.message_callback = kwargs.pop(
          "message_callback", _default_callback
      )
      self.sid = get_rand_id()
      super().__init__(*args, **kwargs)
  
file_path: ParlAI/parlai/chat_service/services/websocket/sockets.py
imports: from typing import Dict, TypeVar
  from tornado.websocket import WebSocketHandler
  import uuid
  import logging
  import json
label_desc: Use image node_id 1 to create a new MessageSocketHandler object from inherited base classes: WebSocketHandler with example: obj = MessageSocketHandler()