code: def webhook_url(self):
          
          webhook_token = ProviderToken.query.filter_by(
              id=self.account.extra_data['tokens']['webhook']
          ).first()
          if webhook_token:
              wh_url = current_app.config.get('GITHUB_WEBHOOK_RECEIVER_URL')
              if wh_url:
                  return wh_url.format(token=webhook_token.access_token)
              else:
                  raise RuntimeError('You must set GITHUB_WEBHOOK_RECEIVER_URL.')
docs: Return the url to be used by a GitHub webhook.