toJson method
Implementation
Map<String, dynamic> toJson() => {
"expiration_intent": expirationIntent,
"auto_renew_product_id": autoRenewProductId,
"is_in_billing_retry_period": isInBillingRetryPeriod,
"product_id": productId,
"original_transaction_id": originalTransactionId,
"auto_renew_status": autoRenewStatus,
};