code: def get(self, model, **spec):
          
  
          handles = self.__find_handles(model, **spec)
          if len(handles) > 1:
              raise MultipleObjectsReturned()
          if not handles:
              raise ObjectDoesNotExist()
          return self.get_instance(model, handles[0])
docs: get a single model instance by handle
  
          :param model: model
          :param handle: instance handle
          :return: