Admin_AssetController::clearThumbnailAction PHP Метод

    public function clearThumbnailAction()
    {
        $success = false;
        if ($asset = Asset::getById($this->getParam("id"))) {
            if (method_exists($asset, "clearThumbnails")) {
                $asset->clearThumbnails(true);
                // force clear
                $asset->save();
                $success = true;
            }
        }
        $this->_helper->json(["success" => $success]);
    }