return "test-hostname";
            }
        };

        FessConfig fessConfig = new TestFessConfig() {
            @Override
            public boolean hasNotification() {
                return true;
            }

            @Override
            public String getNotificationTo() {
                return "";
            }
        };

        final PingResponse ping = searchEngineClient.ping();
        final int status = ping.getStatus();
        if (systemHelper.isChangedClusterState(status)) {
            if (fessConfig.hasNotification()) {
                final String toStrs = fessConfig.getNotificationTo();
                final String[] toAddresses;
                if (StringUtil.isNotBlank(toStrs)) {
                    toAddresses = toStrs.split(",");

            @Override
            public int getDayForCleanup() {
                return 30;
            }

            @Override
            public boolean hasNotification() {
                return false;
            }

            @Override
            public String getMailHostname() {
                return "mail-host";
            }

            @Override

     */
    protected void sendMail(final Map<String, String> infoMap) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        if (fessConfig.hasNotification()) {
            final Map<String, String> dataMap = new HashMap<>();
            for (final Map.Entry<String, String> entry : infoMap.entrySet()) {

    }

    default String getPurgeByBots() {
        return getSystemProperty(Constants.PURGE_BY_BOTS_PROPERTY, Constants.DEFAULT_PURGE_BY_BOTS);
    }

    default boolean hasNotification() {
        return StringUtil.isNotBlank(getNotificationTo()) || StringUtil.isNotBlank(getSlackWebhookUrls());
    }

    default void setSlackWebhookUrls(final String value) {