// Use a Class-Path manifest JAR to circumvent too long command line issues on Windows (cap 8191)
        // Classpath is huge here because it's the test runtime classpath
        return Collections.singleton(getClasspathManifestJarFor(classpath));
    }

    private Collection<File> cleanup(List<File> files) {
        List<File> result = new LinkedList<>();
        String prefix = Jvm.current().getJavaHome().getPath() + File.separator;