code: def test_product_dict(self):
      # TODO(kataoka): This check is tentative. See
      # tests/chainer_tests/conftest.py
      assert (
          testing.product_dict
          is testing.parameterized._product_dict_orig
      )
  
      self.assertListEqual(
          testing.product_dict(*self.actual), self.expect
      )
  
imports: import unittest
  from chainer import testing
label_desc: Use image node_id 1 for calling the ProductDictTest obj's underlying member method code with example usage: obj.test_product_dict() without return types