Ip\Internal\Repository\BrowserModel::instance PHP Method

    public static function instance()
    {
        if (!self::$instance) {
            self::$instance = new BrowserModel();
        }
        return self::$instance;
    }

 /**
  * @param string $url
  * @return string
  */
 protected function downloadFile($url, $title)
 {
     //download image to TMP dir and get $resultFilename
     $net = new \Ip\Internal\NetHelper();
     $tmpFilename = $net->downloadFile($url, ipFile('file/tmp/'), 'bigstock_' . time());
     if (!$tmpFilename) {
         return null;
     }
     //find out file mime type to know required extension
     try {
         $mime = \Ip\Internal\File\Functions::getMimeType(ipFile('file/tmp/' . $tmpFilename));
         switch ($mime) {
             case 'image/png':
                 $ext = '.jpg';
                 break;
             case 'image/gif':
                 $ext = '.gif';
                 break;
             case 'image/bmp':
                 $ext = '.bmp';
                 break;
             case 'image/pjpeg':
             case 'image/jpeg':
             default:
                 $ext = '.jpg';
                 break;
         }
     } catch (\Ip\PhpException $e) {
         $ext = '.jpg';
     }
     //get real nice new file name
     $title = \Ip\Internal\File\Functions::cleanupFileName($title);
     $words = explode(' ', $title);
     $cleanTitle = '';
     foreach ($words as $word) {
         //limit file name to 30 symbols
         if (strlen($cleanTitle . '_' . $word) > 30) {
             break;
         }
         if ($cleanTitle != '') {
             $cleanTitle .= '_';
         }
         $cleanTitle .= $word;
     }
     if ($cleanTitle == '') {
         $cleanTitle = 'file';
     }
     $niceFileName = $cleanTitle . $ext;
     $destinationDir = ipFile('file/repository/');
     $destinationFileName = \Ip\Internal\File\Functions::genUnoccupiedName($niceFileName, $destinationDir);
     copy(ipFile('file/tmp/' . $tmpFilename), $destinationDir . $destinationFileName);
     unlink(ipFile('file/tmp/' . $tmpFilename));
     $browserModel = \Ip\Internal\Repository\BrowserModel::instance();
     $file = $browserModel->getFile($destinationFileName);
     return $file;
 }