def save_new(self, form, commit=True):
        obj = super().save_new(form, commit)
        getattr(obj, self.m2m.attname).add(self.instance)
        return obj
get_status() -> Reservation
dataset/ETHPy150Open allegro/ralph/src/ralph/admin/m2m.py/BaseInlineM2MFormset.save_new--crossover with--dataset/ETHPy150Open weblabdeusto/weblabdeusto/server/src/weblab/core/reservation_processor.py/ReservationProcessor.get_status