protected function _actionRestore($context)
    {
        $revision = $this->getItem();
        $article = $revision->article;
        $article->restore($revision);

        $msg = AnTranslator::sprintf('COM-ARTICLES-ARTICLE-REVISIONS-RESTORATION-CONFIRMATION', $revision->revisionNum);
        $context->response->setRedirect($article->getURL().'&layout=edit', $msg);
    }