code: def test_load_ckpt(self, input_args, expected_name, expected_val):
      with skip_if_downloading_fails():
          output = load_from_mmar(**input_args)
      self.assertEqual(output.__class__.__name__, expected_name)
      x = next(output.parameters())  # verify the first element
      np.testing.assert_allclose(
          x[0][0].detach().cpu().numpy(),
          expected_val,
          rtol=1e-3,
          atol=1e-3,
      )
  
file_path: MONAI/tests/test_mmar_download.py
imports: from __future__ import annotations
  import os
  import tempfile
  import unittest
  from pathlib import Path
  import numpy
  import torch
  from parameterized import parameterized
  from monai import __version__
  from monai.apps import download_mmar, load_from_mmar
  from monai.apps.mmars import MODEL_DESC
  from monai.apps.mmars.mmars import _get_val
  from monai.utils import version_leq
  from tests.utils import skip_if_downloading_fails, skip_if_quick
label_desc: Use image node_id 2 for calling the TestMMMARDownload obj's underlying member method code with example usage: obj.test_load_ckpt(input_args, expected_name, expected_val) without return types