}
        }

        @Override
        protected ActivationOS.Builder transformActivationOS_Family(
                Supplier<? extends ActivationOS.Builder> creator, ActivationOS.Builder builder, ActivationOS target) {
            stk.push(nextFrame("family"));
            try {
                return super.transformActivationOS_Family(creator, builder, target);
            } finally {
                stk.pop();