class_docstr: A low-level class used to connect to a Bokeh server.
  
      
class_docstr_tok: ["A","low-level","class","used","to","connect","to","a","Bokeh","server","."]
docstr: Force a round-trip request/reply to the server, sometimes needed to
  avoid race conditions. Mostly useful for testing.
  
  Outside of test suites, this method hurts performance and should not be
  needed.
  
  Returns:
     None
docstr_tok: ["Force","a","round-trip","request\/reply","to","the","server",",","sometimes","needed","to","avoid","race","conditions",".","Mostly","useful","for","testing",".","Outside","of","test","suites",",","this","method","hurts","performance","and","should","not","be","needed",".","Returns",":","None"]
code: def force_roundtrip(self) -> None:
      """Force a round-trip request/reply to the server, sometimes needed to
      avoid race conditions. Mostly useful for testing.
  
      Outside of test suites, this method hurts performance and should not be
      needed.
  
      Returns:
         None
  
      """
      self._send_request_server_info()
  
imports: from __future__ import annotations
  import logging
  from typing import TYPE_CHECKING, Any, Callable
  from tornado.httpclient import HTTPClientError, HTTPRequest
  from tornado.ioloop import IOLoop
  from tornado.websocket import WebSocketError, websocket_connect
  from ..core.types import ID
  from ..protocol import Protocol
  from ..protocol.exceptions import MessageError, ProtocolError, ValidationError
  from ..protocol.receiver import Receiver
  from ..util.strings import format_url_query_arguments
  from ..util.tornado import fixup_windows_event_loop_policy
  from .states import CONNECTED_AFTER_ACK, CONNECTED_BEFORE_ACK, DISCONNECTED, NOT_YET_CONNECTED, WAITING_FOR_REPLY, ErrorReason, State
  from .websocket import WebSocketClientConnectionWrapper
label_desc: Use image node_id 10 for calling the ClientConnection obj's underlying member method code with example usage: obj.force_roundtrip() without return types