* Only explicitly registered classes can be serialized/deserialized.
     * </p>
     */
    public DataSerializer() {
        kryoThreadLocal = ThreadLocal.withInitial(() -> {
            final Kryo kryo = new Kryo();
            // Enable registration requirement for security - only registered classes can be deserialized
            kryo.setRegistrationRequired(true);

    }

    /** Thread-local SimpleDateFormat for parsing non-standard date formats */
    private static final ThreadLocal<SimpleDateFormat> DATE_FORMAT_HOLDER =
            ThreadLocal.withInitial(() -> new SimpleDateFormat("EEE, d MMM yyyy HH:mm:ss Z", Locale.ENGLISH));

    /**
     * Parses the last modified date from a string value.

    }

    /** Thread-local SimpleDateFormat for parsing non-standard date formats */
    private static final ThreadLocal<SimpleDateFormat> DATE_FORMAT_HOLDER =
            ThreadLocal.withInitial(() -> new SimpleDateFormat("EEE, d MMM yyyy HH:mm:ss Z", Locale.ENGLISH));

    /** RFC 1123 date formatter */
    private static final DateTimeFormatter RFC_1123_FORMATTER =