}
        if (time == null) {
            time = Instant.now();
        }
        SimpleDateFormat dateFormat = new SimpleDateFormat(timestampFormat);
        dateFormat.setCalendar(new GregorianCalendar());
        dateFormat.setTimeZone(DEFAULT_BUILD_TIME_ZONE);
        formattedTimestamp = dateFormat.format(new Date(time.toEpochMilli()));
    }

    public String formattedTimestamp() {
        return formattedTimestamp;