public static function pluralize(array $indexes = array(), $number = 0, array $args = null, $lang = null)
    {
        $_this = self::getInstance();
        $args['nb'] = $number;
        if (isset($indexes[$number])) {
            return self::translate($indexes[$number], $args, $lang);
        }
        $str = ($number<=1) ? array_shift($indexes) : end($indexes);
        return self::translate($str, $args, $lang);
    }