toMap method
Implementation
Map<String, dynamic> toMap() => {
"amount": amount == null ? null : amount,
"currencyCode": currencyCode == null ? null : currencyCode,
"invoiceNo": invoiceNo == null ? null : invoiceNo,
"productDescription": productDescription == null ? null : productDescription,
"recurring": recurring == null ? null : recurring?.toMap(),
"paymentItemInfo": paymentItemInfo == null ? null : List<dynamic>.from(paymentItemInfo!.map((x) => x.toMap())),
};