toJson method
Implementation
@override
Map<String, dynamic> toJson() => <String, dynamic>{
'currency': currency,
'total_amount': totalAmount,
'subscription_until_date': subscriptionUntilDate,
'is_recurring': isRecurring,
'is_first_recurring': isFirstRecurring,
'invoice_payload': invoicePayload,
'shipping_option_id': shippingOptionId,
'order_info': orderInfo?.toJson(),
'telegram_payment_charge_id': telegramPaymentChargeId,
'provider_payment_charge_id': providerPaymentChargeId,
'@type': constructor,
};