}

    default String getNotificationSearchTop() {
        return getSystemProperty(Constants.NOTIFICATION_SEARCH_TOP, StringUtil.EMPTY);
    }

    default void setUserAgentName(final String value) {
        setSystemProperty(Constants.CRAWLING_USER_AGENT_PROPERTY, value);
    }

    default String getUserAgentName() {

        fessConfig.setDayForCleanup(form.dayForCleanup);
        fessConfig.setCrawlingThreadCount(form.crawlingThreadCount);
        fessConfig.setUserAgentName(form.crawlingUserAgent);
        fessConfig.setSearchLog(isCheckboxEnabled(form.searchLog));
        fessConfig.setUserInfo(isCheckboxEnabled(form.userInfo));