private static Map<ServiceInfo, Long> createMapOrderedByServiceList(
            List<ServiceInfo> services, ConcurrentMap<ServiceInfo, Long> result) {
        Map<ServiceInfo, Long> orderedResult = new LinkedHashMap<>();
        for (ServiceInfo service : services) {
            Long generation = result.get(service);
            if (generation != null) {
                orderedResult.put(service, generation);
            }
        }
        return orderedResult;
    }
Get service generation of service at given URL
configserver/src/main/java/com/yahoo/vespa/config/server/application/ConfigConvergenceChecker.java