How to use the mockup.Application function in mockup

root_logger.setLevel(logging.DEBUG)
    else:
        root_logger.setLevel(logging.INFO)

    # Tell GTK+ to use out translations
    locale.bindtextdomain('gtimelog', LOCALE_DIR)
    locale.textdomain('gtimelog')
    # Tell Python's gettext.gettext() to use our translations
    gettext.bindtextdomain('gtimelog', LOCALE_DIR)
    gettext.textdomain('gtimelog')

    # Make ^C terminate the process
    signal.signal(signal.SIGINT, signal.SIG_DFL)

    # Run the app
    app = Application()
    mark_time("app created")
    sys.exit(app.run(sys.argv))

def __init__(self):
        super(Application, self).__init__(
            application_id='org.gtimelog',
            flags=Gio.ApplicationFlags.HANDLES_COMMAND_LINE,
        )
        GLib.set_application_name(_("Time Log"))
        GLib.set_prgname('gtimelog')
        self.add_main_option_entries([
            make_option("--version", description=_("Show version number and exit")),
            make_option("--debug", description=_("Show debug information on the console")),
        ])