toJson method
Implementation
Map<String, dynamic> toJson(extra) => {
"auth_token": authToken ?? authToken,
"amount_cents": amountCents ?? amountCents,
"expiration": expiration ?? expiration,
"order_id": orderId ?? orderId,
"billing_data": billingData ?? billingData!.toJson(),
"extra": extra ?? "",
"currency": currency ?? currency,
"integration_id": integrationId ?? integrationId,
"lock_order_when_paid": lockOrderWhenPaid ?? lockOrderWhenPaid,
};