@Nullable
  @Override
  public String getTailText() {
    if (getPresentation().isDummy()) {
      return "";
    }
    final String customizedText = super.getTailText();
    if (customizedText != null) {
      return customizedText;
    }
    return isLeaf() ? "" : null;
  }
@Nullable
  @Override
  public String getTailText()