protected function _includeAppController(): void
    {
        $controller = null;
        if (file_exists(WWW_ROOT . 'js/app/app_controller.js')) {
            $controller = 'app/app_controller.js';
        } else {
            $controller = '/frontend_bridge/js/lib/app_controller.js';
        }
        $this->_dependencies[] = $controller;
    }