Constructor[] constructors = NativeServices.getConstructors()

        expect:
        constructors.size() == 0
    }

    private static URL jar(Class clazz) {
        clazz.getProtectionDomain().getCodeSource().getLocation()
    }

    }

    private static File wrapperJar() {
        URI location;
        try {
            location = GradleWrapperMain.class.getProtectionDomain().getCodeSource().getLocation().toURI();
        } catch (URISyntaxException e) {
            throw new RuntimeException(e);
        }
        if (!location.getScheme().equals("file")) {