code: def test_cls_values(self):
      with tempfile.TemporaryDirectory() as tempdir:
          test_data = {
              "name": "ChestXRay",
              "description": "Chest X-ray classification",
              "labels": {"0": "background", "1": "chest"},
              "training": [
                  {"image": "chest_19.nii.gz", "label": 0},
                  {"image": "chest_31.nii.gz", "label": 1},
              ],
              "test": ["chest_15.nii.gz", "chest_23.nii.gz"],
          }
          json_str = json.dumps(test_data)
          file_path = os.path.join(tempdir, "test_data.json")
          with open(file_path, "w") as json_file:
              json_file.write(json_str)
          result = load_decathlon_datalist(
              file_path, False, "training", tempdir
          )
          self.assertEqual(
              result[0]["image"],
              os.path.join(tempdir, "chest_19.nii.gz"),
          )
          self.assertEqual(result[0]["label"], 0)
  
file_path: MONAI/tests/test_load_decathlon_datalist.py
imports: from __future__ import annotations
  import json
  import os
  import tempfile
  import unittest
  from pathlib import Path
  from monai.data import load_decathlon_datalist
label_desc: Use image node_id 2 for calling the TestLoadDecathlonDatalist obj's underlying member method code with example usage: obj.test_cls_values() without return types