method GachaMachine.prototype.configTiersimport { GachaMachine } from "https://deno.land/x/fortuna@v2.0.1/history/v1.ts"; configTiers(items: GachaData<ItemType>[]): voidConfigure gacha tiers (meant for internal use). Parametersitems: GachaData<ItemType>[] Array of gacha items. Returnsvoid