static public function getUploadFilePath($filename)
    {
        if ($filename) {
            $filename = static::getUploadFileRelativePath($filename);
            
            if (static::isRootImageFile($filename)) {
                
                return static::getWebRootPath() . $filename;
            }
            
            $filename = static::getUploadPath() . $filename;
        }
        
        return $filename;
    }