async createPriceForTierCadence(tier, cadence) {
        const product = await this.getProductForTier(tier);
        const price = await this.stripeAPIService.createPrice({
            product: product.id,
            interval: cadence,
            currency: tier.currency,
            amount: tier.getPrice(cadence),
            nickname: cadence === 'month' ? 'Monthly' : 'Yearly',
            type: 'recurring',
            active: true
        });
        await this.StripePriceModel.add({
            stripe_price_id: price.id,
            stripe_product_id: product.id,
            active: price.active,
            nickname: price.nickname,
            currency: price.currency,
            amount: price.unit_amount,
            type: 'recurring',
            interval: cadence
        });
        return price;
    }
@param {import('../../../tiers/Tier')} tier
@param {'month'|'year'} cadence
@returns {Promise<import('stripe').default.Price>}