public PassportItem findState(PassportState state) {
        try (Unlocker ignored = lock()) {
            for (PassportItem item : history) {
                if (item.getState() == state) {
                    return item;
                }
            }
        }
        return null;
    }
NOTE: This is NOT nanos since epoch. It's just since an arbitrary point in time. So only use relatively.
zuul-core/src/main/java/com/netflix/zuul/passport/CurrentPassport.java