public function migrateGarpModels() {
        $modelDir = APPLICATION_PATH . '/modules/default/Model';
        $dirIterator = new DirectoryIterator($modelDir);
        foreach ($dirIterator as $finfo) {
            if ($finfo->isDot()) {
                continue;
            }
            $this->_modifyModelFile($finfo);
        }

        $this->_updateCropTemplateRefs();
        return true;
    }