@NlsSafe
  public static String convertPath(final String parent, final String subpath) {
    String convParent = FileUtil.toSystemIndependentName(parent);
    String convPath = FileUtil.toSystemIndependentName(subpath);

    String withSlash = StringUtil.trimEnd(convParent, "/") + "/" + StringUtil.trimStart(convPath, "/");
    return SystemInfo.isFileSystemCaseSensitive ? withSlash : StringUtil.toUpperCase(withSlash);
  }
@NlsSafe
  public static String convertPath(final String parent, final String subpath)