code: def test_serialization(self):
      op = OpWithMultipleOutputs(name="test_op")
      config = op.get_config()
      self.assertEqual(config, {"name": "test_op"})
      op = OpWithMultipleOutputs.from_config(config)
      self.assertEqual(op.name, "test_op")
  
imports: import numpy
  from keras import backend
  from keras import testing
  from keras.backend.common import keras_tensor
  from keras.ops import numpy
  from keras.ops import operation
label_desc: Use image node_id 3 for calling the OperationTest obj's underlying member method code with example usage: obj.test_serialization() without return types