*
     * @param request the multi-search request
     * @return a future for the multi-search response
     */
    @Override
    public ActionFuture<MultiSearchResponse> multiSearch(final MultiSearchRequest request) {
        return client.multiSearch(request);
    }

    /**
     * Executes a multi-search request asynchronously with a callback.
     *

    /** The key of the message: Request to OpenSearch */
    public static final String LABELS_sereq_configuration = "{labels.sereq_configuration}";

    /** The key of the message: Request File */
    public static final String LABELS_sereq_request_file = "{labels.sereq_request_file}";

    /** The key of the message: Request File */

    public static final String ERRORS_APP_DB_ALREADY_EXISTS = "{errors.app.db.already.exists}";

    /** The key of the message: It may have been processed before this request. Please try again. */
    public static final String ERRORS_APP_DOUBLE_SUBMIT_REQUEST = "{errors.app.double.submit.request}";

    /** The key of the message: Invalid username or password. */
    public static final String ERRORS_login_error = "{errors.login_error}";