protected static function createSymbol(\SimpleXMLElement $sNode, $code)
    {
        switch((string) $sNode['type']) {
            case 'UCS':
                $symbol = (string) $sNode['UTF-8'];
                break;
            case null: //no symbol - use code
            default:
                $symbol = $code;
                break;
        }

        return $symbol;
    }