@Override
  public void addExcludedFolder(String path) {
    unregisterAll(path, true, false);
    Url url = toUrl(path);
    ContentEntry e = getContentRootFor(url);
    if (e == null) return;
    if (e.getUrl().equals(url.getUrl())) return;
    e.addExcludeFolder(url.getUrl(), true);
  }
@Override
  public void addExcludedFolder(String path)