def relieve_model(self, model):
        """Do no longer observe the model

        The model is also removed from the internal set of tracked models.

        :param gtkmvc3.Model model: The model to be relieved
        """
        self.__registered_models.remove(model)
        return super(ExtendedController, self).relieve_model(model)
Do no longer observe the model

        The model is also removed from the internal set of tracked models.

        :param gtkmvc3.Model model: The model to be relieved