[rules-users] Proto Buf generated code and KIE

We are starting to take a look at using the KIE workbench to expose some decision tables to our users. The original idea is to use generated java from a proto buffer schema as the model. I've got the jar building and imported into KIE. The challenge I'm running into is that the proto buff java doesn't contain the member definitions in a way that the KIE can see them. So I get all of the classes but can't access the actual data elemetns. Has anybody tried this? Or know of a way to take a proto schema (or generated code) and import it as the model for KIE? Thanks, Joe