code: def test_under_name_scope(self):
      self.assertTrue(self._f())
      with self.assertRaises(AssertionError):
          self._f()
  
file_path: tensorpack/tensorpack/tfutils/unit_tests.py
imports: import unittest
  from ..compat import tfv1
  from ..utils import logger
  from .scope_utils import under_name_scope
label_desc: Use image node_id 2 for calling the ScopeUtilsTest obj's underlying member method code with example usage: obj.test_under_name_scope() without return types