public function getAvailableSetFiles()
    {
        $arrSets = array();
        foreach ($GLOBALS['TL_CONFIG']['advancedClassesSets'] as $key => $value)
        {
            if(!strpos($value,"system/")!==false)
            {
                $arrSets[$value] = basename( $value ) . ' (custom)';
                continue;
            }
            $arrSets[$value] = basename( $value );

        }
        return $arrSets;
    }