void set(ObjectType& object, MemberType dummy) const { raise<OpaqueAttributeError>("Tried to write opaque attribute '{0}' of object '{1}' ({2}).", this->name(), object.object_id(), object.object_type()->name()); }
MemberType get(const ObjectType& object) const { raise<OpaqueAttributeError>("Tried to read opaque attribute '{0}' of object '{1}' ({2}).", this->name(), object.object_id(), object.object_type()->name()); }