docs: def update(self, *args, **kwargs):
          """Update the IP on the remote service."""
          # first find the update_url for the provided account + hostname:
          update_url = next((r.update_url for r in
                             records(self._credentials, self._url)
                             if r.hostname == self.hostname), None)
          if update_url is None:
              LOG.warning("Could not find hostname '%s' at '%s'",
                          self.hostname, self._url)
              return None
          return update(update_url)