code: def teardown(exit_code: Optional[int] = None) -> None:
      setup_instance = _WandbSetup._instance
      if setup_instance:
          setup_instance._teardown(exit_code=exit_code)
      _WandbSetup._instance = None
  
imports: import logging
  import os
  import sys
  import threading
  from typing import TYPE_CHECKING, Any, Dict, List, Optional, Union
  import wandb
  from .None import wandb_manager, wandb_settings
  from .lib import config_util, server, tracelog
label_desc: Use image node_id 4 for calling a global function with example usage: teardown(exit_code) without return types