public static function register ($action, $callable, $noPriv = false)
    {
        if (!$noPriv || $noPriv === self::REGISTER_BOTH)
            add_action(self::getHook($action), $callable);
        if ($noPriv || $noPriv === self::REGISTER_BOTH)
            add_action(self::getHook($action, true), $callable);
    }