private @Nullable String doGetComment() {
    if (myVDirectory != null && myVDirectory.isValid() && !myProject.isDisposed()) {
      final PsiDirectory directory = getPsiDirectory();
      if (directory != null) {
        return ProjectViewDirectoryHelper.getInstance(myProject).getLocationString(directory);
      }
    }
    return null;
  }
private @Nullable String doGetComment()