public void updatePropertiesLabel() {
    StringBuilder sb = new StringBuilder();
    final LibraryType<?> type = getLibraryEditor().getType();
    final Set<LibraryKind> excluded =
      type != null ? Collections.singleton(type.getKind()) : Collections.emptySet();
    for (@Nls String description : LibraryPresentationManager.getInstance().getDescriptions(getLibraryEditor().getFiles(OrderRootType.CLASSES),
                                                                                            excluded)) {
      if (sb.length() > 0) {
        sb.append("\n");
      }
      sb.append(description);
    }
    @NlsSafe final String text = sb.toString();
    myPropertiesLabel.setText(text);
  }
public void updatePropertiesLabel()