def METHOD_NAME():
    """Return Verta standard models with incorrect model_test() signatures."""
    models = []
    class ExtraParamsTest(VertaModelBase):
        def __init__(self, artifacts):
            pass
        def predict(self, input):
            pass
        def model_test(self, input):  # not just `self`
            pass
    models.append(ExtraParamsTest)
    return models