@Nullable
  public static Url getRepositoryRoot(final SvnVcs vcs, final Url url) throws SvnBindException {
    Info info = vcs.getInfo(url, Revision.HEAD);

    return (info == null) ? null : info.getRepositoryRootUrl();
  }
@Nullable
  public static Url getRepositoryRoot(final SvnVcs vcs, final Url url)