@Override
  protected ExpandVariants expandNode(@NotNull Url url) {
    if (myUrl.equals(url)) {
      return ExpandVariants.EXPAND_AND_EXIT;
    }
    if (isAncestor(url, myUrl)) {
      return ExpandVariants.EXPAND_CONTINUE;
    }
    return ExpandVariants.DO_NOTHING;
  }
@Override
  protected ExpandVariants expandNode(@NotNull Url url)