public function resetStats($actors)
    {
        foreach ($actors as $actor) {
            $ids = $actor->notificationIds->toArray();
            $ids = $this->getService('repos:notifications.notification')->getQuery()->id($ids)->fetchValues('id');
            $actor->set('notificationIds', AnDomainAttribute::getInstance('set')->setData($ids));
            $new_ids = array();

            foreach ($actor->newNotificationIds as $id) {
                if (in_array($id, $ids)) {
                    $new_ids[] = $id;
                }
            }

            $actor->set('newNotificationIds', AnDomainAttribute::getInstance('set')->setData($new_ids));
        }
    }