RenderDataUtil.register(data, "notification", fessConfig.getNotificationAdvanceSearch());
        });
    }

    @Execute
    public HtmlResponse search(final SearchForm form) {
        if (viewHelper.isUseSession()) {
            LaRequestUtil.getOptionalRequest().ifPresent(request -> {
                final HttpSession session = request.getSession(false);
                if (session != null && form.num != null) {

            }
            return new TextFragment[0];
        }).orElse(new TextFragment[0]);
    }

    public boolean isUseSession() {
        return useSession;
    }

    public void setUseSession(final boolean useSession) {
        this.useSession = useSession;
    }