How to obtain the receipt of the apple app store by purchase of qt?

[senmx]

Below is an example of Qt, should be able to get receipt in onPurchaseSucceeded, how?

Product {
    id: product100Vowels
    store: iapStore
    type: Product.Consumable
    identifier: "org.qtproject.qthangman.100vowels"

    onPurchaseSucceeded: {
        console.log(identifier + " purchase successful");
        applicationData.vowelsAvailable += 100;
        transaction.finalize();
        pageStack.pop();
    }

    onPurchaseFailed: {
        console.log(identifier + " purchase failed");
        console.log("reason: "
                    + transaction.failureReason === Transaction.CanceledByUser ? "Canceled" : transaction.errorString);
        transaction.finalize();
    }
}