code: def _mock_chat_completion_response(content=TEST_CONTENT):
      return _MockResponse(200, _chat_completion_json_sample(content))
  
imports: import json
  import os
  import time
  from contextlib import contextmanager
  from enum import Enum
  from typing import NamedTuple, Optional
  from unittest import mock
  import requests
  import mlflow
label_desc: Use image node_id 4 for calling a global function with example usage: _mock_chat_completion_response(content) and returns: _MockResponse