code: def test_script(self):
      input_param, input_data, expected_val = TEST_CASES[0]
      loss = MultiScaleLoss(**input_param)
      test_script_save(loss, input_data["y_pred"], input_data["y_true"])
  
file_path: MONAI/tests/test_multi_scale.py
imports: from __future__ import annotations
  import unittest
  import numpy
  import torch
  from parameterized import parameterized
  from monai.losses import DiceLoss
  from monai.losses.multi_scale import MultiScaleLoss
  from tests.utils import test_script_save
label_desc: Use image node_id 3 for calling the TestMultiScale obj's underlying member method code with example usage: obj.test_script() without return types