PayPalRecurringBillingDetails
constructor( billingCycles: List<PayPalBillingCycle>, totalAmount: String, currencyISOCode: String, productName: String? = null, oneTimeFeeAmount: String? = null, productDescription: String? = null, productAmount: String? = null, productQuantity: Int? = null, shippingAmount: String? = null, taxAmount: String? = null)