How to use the catt.controllers.CastState function in catt

def restore(settings, path):
    if not path and not STATE_PATH.is_file():
        raise CliError("Save file in config dir has not been created")
    cst = setup_cast(settings["device"])
    state = CastState(path or STATE_PATH, StateMode.READ)
    try:
        data = state.get_data(cst.cc_name if not path else None)
    except StateFileError:
        raise CliError("The chosen file is not a valid save file")
    if not data:
        raise CliError("No save data found for this device")

    print_status(data["data"])
    click.echo("Restoring...")
    cst = setup_cast(settings["device"], prep="app", controller=data["controller"])
    cst.restore(data["data"])

def __init__(self, state_path: Path, mode: StateMode) -> None:
        super(CastState, self).__init__(state_path)
        if mode == StateMode.CONF:
            self._create_store_dir()
            if not self.store_path.is_file():
                self._write_store({})
        elif mode == StateMode.ARBI:
            self._write_store({})