Ability to persist meta methods

Other languages, such as Lua, can persist dynamic methods:

http://luaforge.net/projects/pluto/

example of how it works:

http://www.mudbytes.net/index.php?a=topic&t=1991

In groovy, you cannot persist a meta method that you have dynamically added to a class because the metaclass is not set up with the closure when deserialization occurs.

I think it would be a good feature to implement, however it may be done.