code: def test_save_typecheck(self):
      self.assertIs(
          revived_types.serialize(autotrackable.AutoTrackable()), None
      )
  
file_path: tensorflow-upstream/tensorflow/python/saved_model/revived_types_test.py
imports: from tensorflow.core.framework import versions_pb2
  from tensorflow.core.protobuf import saved_object_graph_pb2
  from tensorflow.python.platform import test
  from tensorflow.python.saved_model import revived_types
  from tensorflow.python.trackable import autotrackable
label_desc: Use image node_id 1 for calling the RegistrationMatchingTest obj's underlying member method code with example usage: obj.test_save_typecheck() without return types