code: def setUp(self):
      config = testing_data_config("images", "Prostate_T2W_AX_1")
      download_url_or_skip_test(
          url=config["url"],
          filepath=FILE_PATH,
          hash_val=config.get("hash_val"),
          hash_type=config.get("hash_type", "sha256"),
      )
  
file_path: MONAI/tests/test_global_mutual_information_loss.py
imports: from __future__ import annotations
  import os
  import unittest
  import numpy
  import torch
  from monai import transforms
  from monai.losses.image_dissimilarity import GlobalMutualInformationLoss
  from tests.utils import SkipIfBeforePyTorchVersion, download_url_or_skip_test, skip_if_quick, testing_data_config
label_desc: Use image node_id 1 for calling the TestGlobalMutualInformationLoss obj's underlying member method code with example usage: obj.setUp() without return types