public static String getSearchEngineHttpAddress() {
        final String value = System.getProperty(Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS);
        if (value != null) {
            return value;
        }
        return System.getProperty(Constants.FESS_ES_HTTP_ADDRESS);
    }

public class CrawlerEngineClient extends FesenClient {
    @Override
    protected Client createClient() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String[] hosts =
                split(address, ",").get(stream -> stream.map(String::trim).filter(StringUtil::isNotEmpty).toArray(n -> new String[n]));

            }
        }

        final String httpAddress = SystemUtil.getSearchEngineHttpAddress();
        if (StringUtil.isNotBlank(httpAddress)) {
            System.setProperty(FesenClient.HTTP_ADDRESS, httpAddress);
        }

        TimeoutTask systemMonitorTask = null;
        int exitCode;
        try {
            SingletonLaContainerFactory.setConfigPath("app.xml");

                        if (toAddresses.length > 0) {
                            stream(toAddresses).of(stream -> stream.map(String::trim).forEach(address -> {
                                postcard.addTo(address);
                            }));
                        } else {
                            postcard.addTo(fessConfig.getMailFromAddress());
                            postcard.dryrun();

    //                                                                    ================
    // -----------------------------------------------------
    //                                          Mail Address
    //                                          ------------
    public void setFrom(String from, String personal) {
        doSetFrom(from, personal);
    }

    public void addTo(String to) {
        doAddTo(to);

    //                                                                    ================
    // -----------------------------------------------------
    //                                          Mail Address
    //                                          ------------
    public void setFrom(String from, String personal) {
        doSetFrom(from, personal);
    }

    public void addTo(String to) {
        doAddTo(to);

        this.useLocalFesen = useLocalFesen;
        return this;
    }

    public ExecJob remoteDebug() {
        return jvmOptions("-Xdebug", "-Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=localhost:8000");
    }

    public ExecJob gcLogging() {
        final StringBuilder buf = new StringBuilder(100);
        buf.append("-Xlog:gc*,gc+age=trace,safepoint:file=");
        if (logFilePath != null) {