function isDir($path)
 {
     return Lms_Ufs::is_dir($path);
 }
 function _readFolder()
 {
     $this->_files = new Lms_FileSystem_Files();
     $this->_folders = new Lms_FileSystem_Folders();
     $path = $this->getPath();
     if (Lms_Ufs::is_dir($path)) {
         if ($dh = Lms_Ufs::opendir($path)) {
             while (($file = Lms_Ufs::readdir($dh)) !== false) {
                 if ($file != '.' && $file != '..') {
                     $filePath = $path . "/" . $file;
                     if (Lms_Ufs::is_dir($filePath)) {
                         $this->_folders->add(new Lms_FileSystem_Folder($filePath));
                     } else {
                         $this->_files->add(new Lms_FileSystem_File($filePath));
                     }
                 }
             }
             Lms_Ufs::closedir($dh);
         }
     }
     $this->_readed = true;
 }