message: fixed pickle test
diff: @@ -53,7 +53,7 @@ class PickleTests(unittest.TestCase):
  # polygon
  pr = CarRectangle()
  - pra = pickle_unpickle(p)
  + pra = pickle_unpickle(pr)
  self.assertTrue(np.array_equal(pr.ToArray(), pra.ToArray()))
  def test_behavior_model_pickle(self):
  