code: def setUpClass(cls):
      super(__class__, cls).setUpClass()
      cls.orig_value = str(MONAIEnvVars.debug())
  
file_path: MONAI/tests/test_monai_env_vars.py
imports: from __future__ import annotations
  import os
  import unittest
  from monai.utils.misc import MONAIEnvVars
label_desc: Use image node_id 1 for calling the TestMONAIEnvVars obj's underlying member method code with example usage: obj.setUpClass(cls) without return types