I didn't find any way to specify that a generated class implemented some
existing interface, so I wrote a simple plugin to do it. Any comments on
existing ways to do this are welcome, as are comments on the code. As
small as it is, I'm sure there are several things I haven't considered,
or are just mistaken about.
The plugin can be found at
http://xml.w-wins.com/xjc-plugins/interfaces/