code: def test_self_version(self):
      require_module("importlib")
  
file_path: NiftyNet/tests/util_import_test.py
imports: import tensorflow
  from niftynet.utilities.util_import import require_module
  from tests.niftynet_testcase import NiftyNetTestCase
label_desc: Use image node_id 5 for calling the OptionalPackageTest obj's underlying member method code with example usage: obj.test_self_version() without return types