code: async def save(self):
          
          if hasattr(self._handler, "update"):
              if self._changed_data:
                  update_data = dict(self._changed_data)
                  update_data.update({
                      key: self._orig_data[key]
                      for key in self._handler.params
                  })
                  self._data = await self._handler.update(**update_data)
          else:
              raise AttributeError(
                  "'%s' object doesn't support save." % type(self).__name__)
docs: Save the object in MAAS.