def is_empty(self):
        return len(self.children) == 0
A generic version of creating a dns object. The strategy is simple: get
dataset/ETHPy150Open django-admin-tools/django-admin-tools/admin_tools/menu/items.py/ModelList.is_empty--crossover with--dataset/ETHPy150Open mozilla/inventory/mozdns/api/v1/api.py/CommonDNSResource.obj_create