code: def get_config_name():
      try:
          return _AUTO_CONFIG_VAR.get()
      except:  # pylint: disable=bare-except
          return None
  
file_path: towhee/towhee/runtime/auto_config.py
imports: import threading
  from functools import wraps
  import contextvars
  import contextlib
  import towhee.runtime.pipeline_loader
  import towhee.runtime.node_config
  from towhee.utils.log import engine_log
label_desc: Use image node_id 2 for calling a global function with example usage: get_config_name() and returns: _AUTO_CONFIG_VAR, None