public static boolean isResponseHttpErrorStatus(HttpResponseMessage response) {
        boolean isHttpError = false;
        if (response != null) {
            int status = response.getStatus();
            isHttpError = isResponseHttpErrorStatus(status);
        }
        return isHttpError;
    }
User: michaels@netflix.com
Date: 6/9/15
Time: 2:48 PM
zuul-core/src/main/java/com/netflix/zuul/stats/status/StatusCategoryUtils.java