/**
  * Convert a string to HTML5.
  *
  * @param string $strString The XHTML string.
  *
  * @return string The HTML5 string
  */
 public static function toHtml5($strString)
 {
     if (self::isStringUtilAvailable()) {
         return StringUtil::toHtml5($strString);
     }
     return \Contao\String::toHtml5($strString);
 }