is::getMapObject

static function getMapObject(): Map
{
	if (is_null(static::$mapObject))
	{
		$hardCodedMap = static::getHardCodedMapObject();
		$mapFromEvent = static::getMapObjectFromEvent();

		static::$mapObject = $hardCodedMap->merge($mapFromEvent);
	}

	return static::$mapObject;
}