Ability to serialize hidden fields

If a class has a field with the same name as something in the super-class, the super-class's field is not serialized.

Example:

class Something {
private String name = "fish";
}

class BetterSomething extends Something {
private String name = "salmon";
}

Proposed XML:

<BetterSomething>
<name>salmon</name>
<name hidden-in="Something">fish</name>
</BetterSomething>