Description
I think it would make sense to be able to designate certain properties/methods of a class as never serializable/unserializable.

Example
In my particular case, I have a couple of bitmap properties which I expose via boolean setters/getters for each bit, as well as properties for current and new password. I would never want these properties serialized, even when otherwise serializing all properties of the object. @Exclude (that's what JMS calls their counterpart) or @Ignore annotation would help such case.