code: def _clean_lightning_connection():
      if not os.path.exists(_LIGHTNING_CONNECTION):
          return
  
      for ppid in os.listdir(_LIGHTNING_CONNECTION):
          try:
              psutil.Process(int(ppid))
          except (psutil.NoSuchProcess, ValueError):
              connection = os.path.join(
                  _LIGHTNING_CONNECTION, str(ppid)
              )
              if os.path.exists(connection):
                  shutil.rmtree(connection)
  
imports: import json
  import os
  import shutil
  import sys
  from subprocess import Popen
  from typing import List, Optional, Tuple
  import click
  import psutil
  from lightning_utilities.core.imports import package_available
  from rich.progress import Progress
  from lightning.app.utilities.cli_helpers import _get_app_display_name, _LightningAppOpenAPIRetriever
  from lightning.app.utilities.cloud import _get_project
  from lightning.app.utilities.enum import OpenAPITags
  from lightning.app.utilities.log import get_logfile
  from lightning.app.utilities.network import LightningClient
label_desc: Use image node_id 11 for calling a global function with example usage: _clean_lightning_connection() without return types