What is the hash of a null-type attribute value?

[Tom Zeller]

> On reflection, even if it could be demonstrated that what is written to an object stream is formally specified I'd want to make this
> change since the existing code is fragile in the face of (API) changes in the future.

If we want to write a String instead of an Enum to avoid Java API
changes, how about
 objectOutputStream.writeObject(EmptyType.NULL_VALUE.toString());
instead of
 objectOutputStream.writeObject("NULLVALUE");
?

Or, just
 objectOutputStream.writeObject(value.getNativeValue().toString())
should work too, I would think.

Tom