code: def test_class_args_to_exp(self):
      str = {
          "name": "monai.transforms.LoadImaged",
          "args": {
              "keys": ["image", "label"],
              "image_only": True,
          },
      }
      c = class_args_to_exp(str)
      assert c
  
file_path: MONAILabel/tests/unit/utils/test_class_utils.py
imports: import os
  import unittest
  import monailabel.interfaces
  import monailabel.transform.post
  from monailabel.utils.others.class_utils import class_args_to_exp, get_class_names, get_class_of_subclass_from_file, init_class_from_exp
label_desc: Use image node_id 4 for calling the MyTestCase obj's underlying member method code with example usage: obj.test_class_args_to_exp() without return types