code: def test_class(self):
      @require_pkg(
          pkg_name="torch", version="1.4", version_checker=min_version
      )
      class TestClass:
          pass
  
      TestClass()
  
file_path: MONAI/tests/test_require_pkg.py
imports: from __future__ import annotations
  import unittest
  from monai.utils import OptionalImportError, min_version, require_pkg
label_desc: Use image node_id 1 for calling the TestRequirePkg obj's underlying member method code with example usage: obj.test_class() without return types