public RelativePath getRelativePath() {
        if (relativePath == null) {
            RelativePath path = fileDetails.getRelativePath();
            relativePath = specResolver.getDestPath().append(path.isFile(), path.getSegments());
        }
        return relativePath;
    }

    @Override
    public FilePermissions getPermissions() {
        if (permissions != null) {
            return permissions;
        }