Thanks for these enhancements. After studying the supplied implementations of these methods I have simplified things a bit by removing the declaration and setting of the new private fields that do not actually get used anywhere else.
Doing a little bit of research on these methods (i.e. sticking my nose in "Java in a Nutshell"), it seems like they are no-ops for 5.0. I just can't find any reference to them being used anywhere.
Modied versions of your changes have been committed in revision 393425. If you are happy with the way I have applied them then we can close this issue out.