validate method

@override void validate()

Метод проверяет валидность данных

Implementation

@override
void validate() {
  receipt?.validate();
  final List<Shops>? shops = this.shops;
  if (shops != null) {
    for (int i = 0; i < shops.length; i++) {
      shops[i].validate();
    }
  }

  paymentId.validateId(JsonKeys.paymentId, checkNull: true);
  amount.validateAmount(JsonKeys.amount);
  ip.validateIp(JsonKeys.ip);
}