public function render($zoomControlStyle)
    {
        switch ($zoomControlStyle) {
            case ZoomControlStyle::DEFAULT_:
            case ZoomControlStyle::LARGE:
            case ZoomControlStyle::SMALL:
                return sprintf('google.maps.ZoomControlStyle.%s', strtoupper($zoomControlStyle));
            default:
                throw HelperException::invalidZoomControlStyle();
        }
    }