def contains(self, s):
        return QNode(**{'{}__contains'.format(self.get_path()): s})
Verify that all arguments are present and valid when instantiating actors.
dataset/ETHPy150Open Nepherhotep/django-orm-sugar/django_orm_sugar.py/QFactory.contains--crossover with--dataset/ETHPy150Open EricssonResearch/calvin-base/calvin/csparser/checker.py/Checker.check_arguments