class_docstr: The ``ClientConnection`` has sent a message to the Bokeh Server which
  should generate a paired reply, and is waiting for the reply.
class_docstr_tok: ["The","``","ClientConnection","``","has","sent","a","message","to","the","Bokeh","Server","which","should","generate","a","paired","reply",",","and","is","waiting","for","the","reply","."]
docstr: The reply from the server. (``None`` until the reply arrives) 
docstr_tok: ["The","reply","from","the","server",".","(","``","None","``","until","the","reply","arrives",")"]
code: def reply(self) -> Message[Any] | None:
      """The reply from the server. (``None`` until the reply arrives)"""
      return self._reply
  
imports: from __future__ import annotations
  import logging
  from abc import ABCMeta, abstractmethod
  from enum import Enum, auto
  from typing import TYPE_CHECKING, Any
  from ..core.types import ID
label_desc: Use image node_id 2 for calling the WAITING_FOR_REPLY obj's underlying member method code with example usage: obj.reply() and returns: self