code: def test_async_trigger_in_sync_chat():
      agent = ConversableAgent(
          "a0",
          max_consecutive_auto_reply=0,
          llm_config=False,
          human_input_mode="NEVER",
      )
      agent1 = ConversableAgent(
          "a1",
          max_consecutive_auto_reply=0,
          llm_config=False,
          human_input_mode="NEVER",
      )
      agent2 = ConversableAgent(
          "a2",
          max_consecutive_auto_reply=0,
          llm_config=False,
          human_input_mode="NEVER",
      )
  
      reply_mock = unittest.mock.MagicMock()
  
      async def a_reply(recipient, messages, sender, config):
          reply_mock()
          print("hello from a_reply")
          return (True, "hello from reply function")
  
      agent.register_reply(agent1, a_reply)
  
      with pytest.raises(RuntimeError) as e:
          agent1.initiate_chat(agent, message="hi")
  
      assert (
          e.value.args[0]
          == "Async reply functions can only be used with ConversableAgent.a_initiate_chat(). "
          "The following async reply functions are found: a_reply"
      )
  
      agent2.register_reply(
          agent1, a_reply, ignore_async_in_sync_chat=True
      )
      reply_mock.assert_not_called()
  
imports: import asyncio
  import copy
  import sys
  import time
  from typing import Any, Callable, Dict, Literal
  import unittest
  import inspect
  import pytest
  from unittest.mock import patch
  from pydantic import BaseModel, Field
  from typing_extensions import Annotated
  import autogen
  from autogen.agentchat import ConversableAgent, UserProxyAgent
  from test_assistant_agent import KEY_LOC, OAI_CONFIG_LIST
  from conftest import skip_openai
label_desc: Use image node_id 3 for calling a global function with example usage: test_async_trigger_in_sync_chat() and returns: True,  str