def METHOD_NAME(self):
    # the default values are mutable
    # so if new instances weren't being created,
    # the second one would refer to the same instance
    # for the .general field as the first and as such
    # this test would fail
    bc1 = Config()
    bc1.general.spacy_model = 'smth'
    bc2 = Config()
    self.assertNotEqual(bc2.general.spacy_model, bc1.general.spacy_model)