return "DaemonStopEvent{"
            + "timestamp=" + timestamp
            + ", pid=" + pid
            + ", status=" + status
            + "}";
    }

    boolean occurredInLastHours(final int numHours) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date(System.currentTimeMillis()));
        cal.add(Calendar.HOUR_OF_DAY, -1 * numHours);