public static function buildTag($tagName, $attribs = array(), $innerhtml = '')
    {
        $tagName = \strtolower($tagName);
        $attribStr = self::buildAttribString($attribs);
        return \in_array($tagName, self::$htmlEmptyTags)
            ? '<'.$tagName.$attribStr.' />'
            : '<'.$tagName.$attribStr.'>'.$innerhtml.'</'.$tagName.'>';
    }