public function &getThumbnailsConfig()
    {
        if (!isset($this->_thumbnailsConfigCache)) {
            $this->_thumbnailsConfigCache = new CKFinder_Connector_Core_ThumbnailsConfig(isset($GLOBALS['config']['Thumbnails']) ? $GLOBALS['config']['Thumbnails'] : array());
        }

        return $this->_thumbnailsConfigCache;
    }