@ApiStatus.Obsolete
  public static boolean isGitRoot(@NotNull Path rootDir) {
    Path dotGit = rootDir.resolve(DOT_GIT);
    BasicFileAttributes attributes;
    try {
      attributes = Files.readAttributes(dotGit, BasicFileAttributes.class);
    }
    catch (IOException ignore) {
      return false;
    }

    if (attributes.isDirectory()) {
      try {
        BasicFileAttributes headExists = Files.readAttributes(dotGit.resolve(HEAD_FILE), BasicFileAttributes.class);
        return headExists.isRegularFile();
      }
      catch (IOException ignore) {
        return false;
      }
    }
    if (!attributes.isRegularFile()) {
      return false;
    }

    String content;
    try {
      content = DvcsUtil.tryOrThrow(() -> StringUtil.convertLineSeparators(Files.readString(dotGit)).trim(), dotGit);
    }
    catch (RepoStateException e) {
      LOG.error(e);
      return false;
    }

    String pathToDir = parsePathToRepository(content);
    if (pathToDir == null) return false;
    return findRealRepositoryDir(rootDir, pathToDir) != null;
  }
@ApiStatus.Obsolete
  public static boolean isGitRoot(@NotNull Path rootDir)