text: public virtual PurchaseReservedDBInstancesOfferingResponse PurchaseReservedDBInstancesOffering(PurchaseReservedDBInstancesOfferingRequest request){var options = new InvokeOptions();options.RequestMarshaller = PurchaseReservedDBInstancesOfferingRequestMarshaller.Instance;options.ResponseUnmarshaller = PurchaseReservedDBInstancesOfferingResponseUnmarshaller.Instance;return Invoke<PurchaseReservedDBInstancesOfferingResponse>(request, options);}