public function getSearchAttributes( $withsub = true )
	{
		/** classes/catalog/manager/index/attribute/submanagers
		 * List of manager names that can be instantiated by the catalog index attribute manager
		 *
		 * Managers provide a generic interface to the underlying storage.
		 * Each manager has or can have sub-managers caring about particular
		 * aspects. Each of these sub-managers can be instantiated by its
		 * parent manager using the getSubManager() method.
		 *
		 * The search keys from sub-managers can be normally used in the
		 * manager as well. It allows you to search for items of the manager
		 * using the search keys of the sub-managers to further limit the
		 * retrieved list of items.
		 *
		 * @param array List of sub-manager names
		 * @since 2014.03
		 * @category Developer
		 */
		$path = 'classes/catalog/manager/index/attribute/submanagers';

		$list = $this->_getSearchAttributes( $this->_searchConfig, $path, array(), $withsub );
		$list += MShop_Factory::createManager( $this->_getContext(), 'product' )->getSearchAttributes( $withsub );

		return $list;
	}