[rules-users] Extending the "validation of rules" functionality in Guvnor

Hello everyone, Currently, the validate functionality ensures that rules have proper syntax. it is possible to extend this functionality so that business use cases might also be validated? Is there an API/examples to do that. For eg, in our domain, an object X can be evaluated for 3 criteria ( a, b, c ) However, we would need to prevent rules written which combine criteria b and c Rules can have the combinations ( a,b,c, ab, ac ). Combinations ( bc and abc ) should not be allowed. Regards, Prem