code: def test_save_and_load_hdf5(self):
      testing.save_and_load_hdf5(self.src, self.dst)
      self.assertEqual(self.dst.value, 1)
  
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 3 for calling the TestSaveAndLoad obj's underlying member method code with example usage: obj.test_save_and_load_hdf5() without return types