void showDescription(@NotNull T scheme) {
    String newDescription = ((DescriptionAwareSchemeActions<T>)getActions()).getDescription(scheme);
    myDescriptionLabel.setAllText(StringUtil.notNullize(newDescription));
    myLayout.show(myInfoComponent, SHOW_DESCRIPTION_CARD);
    myPainter.setNeedsRepaint(true);
  }
void showDescription(@NotNull T scheme)