@Override
    public HttpResponse handle(HttpRequest request) {
        if (metric != null)
            metric.add(NUM_REQUESTS_METRIC, 1, null);
        return new StatusResponse();
    }
Create this with a dedicated thread pool to avoid returning an error to VIPs when the regular thread pool is 
out of capacity. This is the default behavior.
container-core/src/main/java/com/yahoo/container/handler/VipStatusHandler.java