def cache(self, running):
        """
        save / update this gear into Ariane server cache
        :param running: the new running value (True or False)
        :return:
        """
        LOGGER.debug("InjectorGearSkeleton.cache")
        self.running = running if running is not None else False
        return self.cached_gear_actor.save(running).get()
save / update this gear into Ariane server cache
        :param running: the new running value (True or False)
        :return: