code: def serialize(self, serializer):
      self.value = serializer("value", self.value)
  
file_path: chainer/tests/chainer_tests/testing_tests/test_serializer.py
imports: import unittest
  from chainer.serializers import hdf5
  from chainer import testing
label_desc: Use image node_id 2 for calling the Serializable obj's underlying member method code with example usage: obj.serialize(serializer) without return types