public RouteStatusCodeMonitor getRouteStatusCodeMonitor(String route, int statusCode) {
        Map<Integer, RouteStatusCodeMonitor> map = routeStatusMap.get(route);
        if (map == null) {
            return null;
        }
        return map.get(statusCode);
    }
@param route
@param statusCode
@return the RouteStatusCodeMonitor for the given route and status code
zuul-core/src/main/java/com/netflix/zuul/stats/StatsManager.java