docs: @Nonnull
    private static String _escape (@Nonnull final String sStr)
    {
      String ret = sStr;
      while (true)
      {
        final int idx = ret.indexOf ("*/");
        if (idx < 0)
          return ret;
  
        ret = ret.substring (0, idx + 1) + "<!-- -->" + ret.substring (idx + 1);
      }
    }