@Override
    public String getId() {
        return id;
    }
Zuul Status Category

As some of the origin servers won't/can't return correct HTTP status codes in responses, we use set an
StatusCategory attribute to distinguish the main statuses that we care about from Zuul's perspective.

These status categories are split into 2 groups:

   SUCCESS | FAILURE

each of which can have a narrower definition, eg:

   FAILURE_THROTTLED
   FAILURE_ORIGIN
   etc...

 which _should_ also be subdivided with one of:

   ORIGIN
   CLIENT
   LOCAL
zuul-core/src/main/java/com/netflix/zuul/stats/status/ZuulStatusCategory.java