This proposal is deffered and not under active development or consideration
The reason for deferral is that the JSR-295 API is too unstable. Since this posting it has gone under a major re-design. It will not be revisited any earlier than the posting of the first proposed final draft for that reason.
Based off of an example in Scott Violet's last blog at sun, a BindingBuilder in practice would look something like this:
Once I get a better feel for the existing code I can mock up what all the possible children would be.
Here's what the java snippets from the post are