code: def setUp(self):
      self.src = Serializable(1)
      self.dst = Serializable(2)
  
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 1 for calling the TestSaveAndLoad obj's underlying member method code with example usage: obj.setUp() without return types