code: def roundtrip(self, obj, custom_objects=None, safe_mode=True):
      serialized = serialization_lib.serialize_keras_object(obj)
      json_data = json.dumps(serialized)
      json_data = json.loads(json_data)
      deserialized = serialization_lib.deserialize_keras_object(
          json_data, custom_objects=custom_objects, safe_mode=safe_mode
      )
      reserialized = serialization_lib.serialize_keras_object(
          deserialized
      )
      return serialized, deserialized, reserialized
  
imports: import json
  import numpy
  import pytest
  import keras
  from keras import ops
  from keras import testing
  from keras.saving import serialization_lib
label_desc: Use image node_id 1 for calling the SerializationLibTest obj's underlying member method code with example usage: obj.roundtrip(obj, custom_objects, safe_mode) and returns: serialized,  deserialized,  reserialized