private static function loadConfig()
    {
        $config = Config::get('placeholders');
        self::$longs = $config['longs'];
        self::$longModifiers = $config['longModifiers'];
        self::$placeholders = array();
        foreach ($config['placeholders'] as $placeholder) {
            self::$placeholders[$placeholder] = true;
        }
        self::$lModifiers = array();
        foreach ($config['modifiers'] as $modifier) {
            self::$lModifiers[$modifier] = false;
        }
        return true;
    }