@Override
    public synchronized List<Entry> export() {
        List<Entry> entries = new ArrayList<>();
        for (Map.Entry<String, FileReference> entry : fileReferenceCache.entrySet()) {
            entries.add(new Entry(entry.getKey(), entry.getValue()));
        }
        return entries;
    }
File registry for one application package

@author Tony Vaagenes
configserver/src/main/java/com/yahoo/vespa/config/server/filedistribution/FileDBRegistry.java