@Override
  public ItemLatestState getLastRevision(FilePath filePath) {
    VirtualFile vcsRoot = VcsUtil.getVcsRootFor(project, filePath);
    if (vcsRoot == null) {
      return null;
    }

    HgWorkingCopyRevisionsCommand command = new HgWorkingCopyRevisionsCommand(project);
    HgRevisionNumber currentRevision = command.identify(vcsRoot).getFirst();
    if (currentRevision == null) {
      return null;
    }

    boolean fileExists = filePath.getIOFile().exists();
    if (currentRevision.isWorkingVersion()) {
      return new ItemLatestState(command.firstParent(vcsRoot), fileExists, true);
    }

    return new ItemLatestState(currentRevision, fileExists, true);
  }
@Override
  public ItemLatestState getLastRevision(FilePath filePath)