code: def aup_save_model(callback_fn, *args, **kwargs):
      global user_callback_fn
      global user_args
      global user_kwargs
  
      user_callback_fn = callback_fn
      user_args = args
      user_kwargs = kwargs
  
imports: from __future__ import print_function
  import logging
  import json
  import pickle
  import sys
  import inspect
  import functools
  import os
  import shutil
label_desc: Use image node_id 4 for calling a global function with example usage: aup_save_model(callback_fn) without return types