code: def test_initialized_list(self):
      def f():
          return [1, 2, 3]
  
      tr = self.transform(f, lists, operator_overload=OperatorList())
      tl = tr()
  
      self.assertIsInstance(tl, TestList)
      self.assertEqual(tl, [1, 2, 3])
  
imports: from nvidia.dali._autograph.converters import directives
  from nvidia.dali._autograph.converters import lists
  from nvidia.dali._autograph.core import converter_testing
  from nvidia.dali._autograph.utils import hooks
label_desc: Use image node_id 2 for calling the ListTest obj's underlying member method code with example usage: obj.test_initialized_list() and returns: list