def on_cleanup_error(function, path, excinfo):
                click.secho("warning: failed to remove file or directory: {}\n"
                            "please delete it manually.".format(path),
                            fg="red")
def aboutDialog(self):
        yui.YUI.widgetFactory;
        mgafactory = yui.YMGAWidgetFactory.getYMGAWidgetFactory(yui.YExternalWidgets.externalWidgetFactory("mga"))
        dlg = mgafactory.createAboutDialog("About dialog title example", "1.0.0", "GPLv3",
                                        "Angelo Naselli", "This beautiful test example shows how it is easy to play with libyui bindings", "")
        dlg.show();