updateConfigListenerMap.put("KeyMatch", () -> Integer.toString(ComponentUtil.getKeyMatchHelper().load()));
    }

    protected void parseProjectProperties(final Path propPath) {
        try (final InputStream in = Files.newInputStream(propPath)) {
            final Properties prop = new Properties();
            prop.load(in);
            version = prop.getProperty("fess.version", "0.0.0");