code: def test_when_the_config_key_does_not_exists(self):
      from airflow import logging_config
  
      with conf_vars({("logging", "logging_config_class"): None}):
          with patch.object(logging_config.log, "debug") as mock_debug:
              logging_config.configure_logging()
              mock_debug.assert_any_call(
                  "Could not find key logging_config_class in config"
              )
  
imports: from __future__ import annotations
  import contextlib
  import importlib
  import logging
  import os
  import pathlib
  import sys
  import tempfile
  from unittest.mock import patch
  import pytest
  from airflow.configuration import conf
  from tests.test_utils.config import conf_vars
label_desc: Use image node_id 7 for calling the TestLoggingSettings obj's underlying member method code with example usage: obj.test_when_the_config_key_does_not_exists() without return types