public static function getRealFSReference($path, $persistent = false)
 {
     $contextOpened = false;
     if (self::$crtZip != null) {
         $contextOpened = true;
         $crtZip = self::$crtZip;
         self::$crtZip = null;
     }
     $realPath = self::initPath($path, "file");
     if (!$contextOpened) {
         self::closeWrapper();
     } else {
         self::$crtZip = $crtZip;
     }
     return $realPath;
 }