@Nullable
  public static SvnBranchConfigurationNew loadDefaultConfiguration(
      final Project project, final VirtualFile vcsRoot) {
    try {
      final SvnVcs vcs = SvnVcs.getInstance(project);

      File rootFile = new File(vcsRoot.getPath());
      final Info info = vcs.getInfo(rootFile);
      if (info == null || info.getURL() == null) {
        LOG.info("Directory is not a working copy: " + vcsRoot.getPresentableUrl());
        return null;
      }
      SVNURL baseUrl = info.getURL();

      final SvnBranchConfigurationNew result = new SvnBranchConfigurationNew();
      result.setTrunkUrl(baseUrl.toString());
      while (true) {
        final String s = SVNPathUtil.tail(baseUrl.getPath());
        if (s.equalsIgnoreCase(DEFAULT_TRUNK_NAME)
            || s.equalsIgnoreCase(DEFAULT_BRANCHES_NAME)
            || s.equalsIgnoreCase(DEFAULT_TAGS_NAME)) {
          SVNURL rootPath = baseUrl.removePathTail();
          SvnTarget target = SvnTarget.fromURL(rootPath);

          vcs.getFactory(target)
              .createBrowseClient()
              .list(target, SVNRevision.HEAD, Depth.IMMEDIATES, createHandler(result, rootPath));
          break;
        }
        if (SVNPathUtil.removeTail(baseUrl.getPath()).length() == 0) {
          break;
        }
        baseUrl = baseUrl.removePathTail();
      }
      return result;
    } catch (SVNException e) {
      LOG.info(e);
      return null;
    } catch (VcsException e) {
      LOG.info(e);
      return null;
    }
  }
  private void fillMapping(final SvnMapping mapping, final List<SvnCopyRootSimple> list) {
    final LocalFileSystem lfs = LocalFileSystem.getInstance();

    for (SvnCopyRootSimple simple : list) {
      final VirtualFile copyRoot = lfs.findFileByIoFile(new File(simple.myCopyRoot));
      final VirtualFile vcsRoot = lfs.findFileByIoFile(new File(simple.myVcsRoot));

      if (copyRoot == null || vcsRoot == null) continue;

      final SvnVcs vcs = SvnVcs.getInstance(myProject);
      final SVNInfo svnInfo = vcs.getInfo(copyRoot);
      if ((svnInfo == null) || (svnInfo.getRepositoryRootURL() == null)) continue;

      final RootUrlInfo info =
          new RootUrlInfo(
              svnInfo.getRepositoryRootURL(),
              svnInfo.getURL(),
              SvnFormatSelector.getWorkingCopyFormat(svnInfo.getFile()),
              copyRoot,
              vcsRoot);
      mapping.add(info);
    }
  }