code: def testBuggyGetConfig(self):
      class NotSerializable(object):
          pass
  
      class GetConfigRaisesError(base.Trackable):
          def get_config(self):
              return NotSerializable()
  
      util.Checkpoint(obj=GetConfigRaisesError()).save(
          os.path.join(self.get_temp_dir(), "ckpt")
      )
  
file_path: tensorflow-upstream/tensorflow/python/trackable/base_test.py
imports: import os
  from tensorflow.python.checkpoint import checkpoint
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import variable_scope
  from tensorflow.python.platform import test
  from tensorflow.python.trackable import base
label_desc: Use image node_id 4 for calling the InterfaceTests obj's underlying member method code with example usage: obj.testBuggyGetConfig() and returns: NotSerializable