code: def test_apps_download(self):
      output = os.path.join(self.data_dir, "downloaded_app")
      args = argparse.Namespace(
          download=True, prefix="", name="radiology", output=output
      )
      Main().action_apps(args)
      assert os.path.isdir(output)
      shutil.rmtree(output, ignore_errors=True)
  
file_path: MONAILabel/tests/unit/test_main.py
imports: import argparse
  import os
  import shutil
  import unittest
  from monailabel.main import Main
label_desc: Use image node_id 4 for calling the MyTestCase obj's underlying member method code with example usage: obj.test_apps_download() without return types