code: def test_shared_object(self):
      class MyLayer(keras.layers.Layer):
          def __init__(self, activation, **kwargs):
              super().__init__(**kwargs)
              if isinstance(activation, dict):
                  self.activation = (
                      serialization_lib.deserialize_keras_object(
                          activation
                      )
                  )
              else:
                  self.activation = activation
  
          def call(self, x):
              return self.activation(x)
  
          def get_config(self):
              config = super().get_config()
              config["activation"] = self.activation
              return config
  
      class SharedActivation:
          def __call__(self, x):
              return x**2
  
          def get_config(self):
              return {}
  
          @classmethod
          def from_config(cls, config):
              return cls()
  
      shared_act = SharedActivation()
      layer_1 = MyLayer(activation=shared_act)
      layer_2 = MyLayer(activation=shared_act)
      layers = [layer_1, layer_2]
  
      with serialization_lib.ObjectSharingScope():
          serialized, new_layers, reserialized = self.roundtrip(
              layers,
              custom_objects={
                  "MyLayer": MyLayer,
                  "SharedActivation": SharedActivation,
              },
          )
      self.assertIn(
          "shared_object_id", serialized[0]["config"]["activation"]
      )
      obj_id = serialized[0]["config"]["activation"]
      self.assertIn(
          "shared_object_id", serialized[1]["config"]["activation"]
      )
      self.assertEqual(obj_id, serialized[1]["config"]["activation"])
      self.assertIs(layers[0].activation, layers[1].activation)
      self.assertIs(new_layers[0].activation, new_layers[1].activation)
  
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 11 for calling the SerializationLibTest obj's underlying member method code with example usage: obj.test_shared_object() and returns: self, config, unknown, dict, cls