protected function bootNotificationVariables()
    {
        if (!app('antares.installed')) {
            return;
        }

        /* @var $notification VariablesService */
        if (class_exists(VariablesService::class)) {
            $notification = app()->make(VariablesService::class);

            $notification->register('foundation', new CoreVariablesProvider());
        }
    }