UsernamePrincipal implements Serializable ?

[Cantor, Scott]

> The v3 UsernamePrincipal does not implement Serializable while in v2
> it does ... anyone know why ?
> 
> I assume Serializable was omitted accidentally, but I am asking
> because maybe there is some sort of serialization work needing to be
> figured out, dunno.

I didn't notice (or change that) but I think it reflects that fact that we don't intend to use Java serialization to handle this area.

My plan is to (for now) require workflows to attach a StorageSerializer to themselves that can marshall and/all data the workflow produces, including any custom Subject/Principal data.

-- Scott