def update_signature(self, status, status_datetime=None):
        raise NotImplementedError()
Make sure no other nodes exist at the level of this CNAME.
dataset/ETHPy150Open novafloss/django-docusign/django_docusign/views.py/SignatureCallbackView.update_signature--crossover with--dataset/ETHPy150Open rtucker-mozilla/mozilla_inventory/mozdns/cname/models.py/CNAME.existing_node_check