@Nullable
  private Url getBranchForUrl(@Nullable Url url) {
    final RootUrlInfo rootInfo = myVcs.getSvnFileUrlMapping().getWcRootForFilePath(myRoot);

    return rootInfo != null && url != null ? SvnUtil.getBranchForUrl(myVcs, rootInfo.getVirtualFile(), url) : null;
  }
@Nullable
  private Url getBranchForUrl(@Nullable Url url)