private void setOutOfServiceStatus() {
            contentType = "text/plain";
            data = Utf8.toBytes(NO_SEARCH_BACKENDS);
            setStatus(com.yahoo.jdisc.http.HttpResponse.Status.NOT_FOUND);
        }
Behaves like a VIP status response file has been deleted.
container-core/src/main/java/com/yahoo/container/handler/VipStatusHandler.java