code: def _custom_user_function(self, cls, *args, **kwargs):
      return check_kwargs_exist_in_class_init(cls, kwargs)
  
file_path: MONAI/tests/test_monai_utils_misc.py
imports: from __future__ import annotations
  import os
  import unittest
  from parameterized import parameterized
  from monai.utils.misc import MONAIEnvVars, check_kwargs_exist_in_class_init, run_cmd, to_tuple_of_dictionaries
label_desc: Use image node_id 2 for calling the TestMiscKwargs obj's underlying member method code with example usage: obj._custom_user_function(cls) and returns: check_kwargs_exist_in_class_init