code: def test_serialization(self, backend_config):
      if not self.lazy_init:
          self.check_serialization(backend_config)
  
imports: import copy
  import os
  import unittest
  import numpy
  import pytest
  import chainer
  from chainer.backends import _cpu
  from chainer.link_hooks.spectral_normalization import SpectralNormalization
  import chainer.links
  from chainer import serializers
  from chainer import testing
  from chainer.testing import attr
  from chainer.testing.backend import BackendConfig
  from chainer import utils
label_desc: Use image node_id 17 for calling the BaseTest obj's underlying member method code with example usage: obj.test_serialization(backend_config) without return types