* tries to step beyond the file system root, the root is returned.
     */
    public static File normalize(File src) {
        String path = src.getAbsolutePath();
        String normalizedPath = FilenameUtils.normalizeNoEndSeparator(path);
        if (normalizedPath != null) {
            return new File(normalizedPath);
        }
        File root = src;
        File parent = root.getParentFile();
        while (parent != null) {