Get a Json from a list of Objects in Dart

main.dart

class PaymentSlipes {
  String name;
  String personaId;

  PaymentSlipes({this.name, this.personaId});

  Map<String, dynamic> toJson() => {'name': name, 'personaId': personaId};
}

List encondeToJson(List<PaymentSlipes> list) {
  List jsonList = List();
  list.map((item) => jsonList.add(item.toJson())).toList();
  return jsonList;
}

void main() {
  PaymentSlipes objPayment = PaymentSlipes(name: "Douglas", personaId: "123425465");
  PaymentSlipes objPayment2 = PaymentSlipes(name: "Dave", personaId: "123425465");
  PaymentSlipes objPayment3 = PaymentSlipes(name: "Mike", personaId: "123425465");
  var list = [objPayment, objPayment2, objPayment3];
  var finalJson = {"payment_slips": encondeToJson(list)};
  print(finalJson);
}