this.visualCpp = visualCpp;
            this.sdk = sdk;
            this.ucrt = ucrt;
        }

        @Override
        public VersionNumber getSdkVersion() {
            return sdk.getSdkVersion();
        }

        @Override
        public List<File> getIncludeDirs() {
            ImmutableList.Builder<File> builder = ImmutableList.builder();

    }

    @Override
    public VersionNumber getVisualStudioVersion() {
        // Assume VS 2015
        return VersionNumber.parse("14.0");
    }

    @Override
    public VersionNumber getSdkVersion() {
        // Assume 8.1
        return VersionNumber.parse("8.1");
    }

    @Override
    public FileCollection getSourceFiles() {
        Spec<LanguageSourceSet> filter = new Spec<LanguageSourceSet>() {