Interface SubscriptionPreview

interface SubscriptionPreview {
    billingPeriodRange: DateRange;
    discount?: SubscriptionPreviewDiscount;
    proration?: SubscriptionPreviewProration;
    subscription?: SubscriptionPricePreview;
    subTotal: Money;
    tax?: Money;
    taxDetails?: SubscriptionPreviewTaxDetails;
    total: Money;
    totalExcludingTax: Money;
}