public boolean propertiesChanged(Object other) {
        if (!(other instanceof VirtualTopic)) {
            return false;
        }
        VirtualTopic vt = (VirtualTopic) other;
        int size = queueMap.size();
        if (size != vt.queueMap.size()) {
            return true;
        }
        for (Integer id : queueMap.keySet()) {
            if (!vt.queueMap.containsKey(id)) {
                return true;
            }
        }
        return false;
    }
@param queueCount the queueCount to set
src/test/java/com/alibaba/json/bvtVO/VirtualTopic.java