code: public static OptionDialog showOptionDialog (Stage stage, String title, String text, OptionDialogType type, OptionDialogListener listener) {
  		OptionDialog dialog = new OptionDialog(title, text, type, listener);
  		stage.addActor(dialog.fadeIn());
  		return dialog;
  	}
docs: Dialog with text and buttons like Yes, No, Cancel.
  @param title dialog title
  @param type specifies what types of buttons will this dialog have
  @param listener dialog buttons listener.
  @return dialog for the purpose of changing buttons text.
  @see OptionDialog
  @since 0.6.0