return file.exists();
                }

                // check if the file is missing, if it is then the profile will be active
                fileString = actFile.getMissing();

                if (fileString != null && !fileString.isEmpty()) {
                    fileString = interpolator.interpolate(fileString, "").replace("\\", "/");
                    File file = new File(fileString);

            stk.push(new ActivationFrame("exists", Optional.empty()));
            validator.accept(fa.getExists());
            stk.peek().location = "missing";
            validator.accept(fa.getMissing());
            stk.pop();
            stk.pop();
        });
        root.map(Activation::getOs).ifPresent(oa -> {
            stk.push(new ActivationFrame("os", Optional.of(oa)));