For what:
interaction of problemsolvers, e.g SCM uses score rules for contraint propagation.
Activate flag in KnowME:
PSMethod1 -> InteractionStrategy -> PSMethod2*
save configuration in properties
ToDo:
Use extended PSMethod and XPSCase interface. Each PSMethod corrects its final solutions in a new method (use template method pattern). InteractionStrategy indicates the kind of interaction of the given problemsolvers (use visitor pattern, if the interface isnt supporting a simple access). Watch out for cycles.
Simple InteractionStrategy: If PSMethod2 excluded the current solution, PSMethod1 will also do so.
