@Override
  public void allowEmptySelection(@NotNull @NlsContexts.ListItem String emptySelectionText) {
    myAllowEmptySelection = true;
    myModel.add(null);
    setRenderer(new ModuleDescriptionListCellRenderer(emptySelectionText));
  }
@Override
  public void allowEmptySelection(@NotNull @NlsContexts.ListItem String emptySelectionText)