handlers.put(p.name, obj);
Object old = handlers.put(p.name, obj);  if (old != null) { handlers.put(p.name, old); }
    public final void registerParents(Map handlers, Object obj) {        Prototype p = parent;        while ((p != null) && !"hopobject".equalsIgnoreCase(p.getName())) {            handlers.put(p.name, obj);            p = p.parent;        }    }