@Override
    public String toString() {
        try {
            return toJSON();
        } catch (Throwable e) {
            LOG.error(e.getMessage(), e);
            return "";
        }
    }
User: michaels@netflix.com
Date: 6/25/15
Time: 1:03 PM
zuul-core/src/main/java/com/netflix/zuul/niws/RequestAttempts.java