AnnotationReader reader = (AnnotationReader) it.next();
AnnotationReader reader = (AnnotationReader) ((Reference)it.next()).get();
    public static void refreshAll() {        for (Iterator it = READERS.values().iterator(); it.hasNext();) {            AnnotationReader reader = (AnnotationReader) it.next();            synchronized (reader) {                reader.refresh();            }        }    }