preview
open suspend fun previewPaymentAsync(request: WalletCheckoutPaymentPreview, cancellationSignal: CancellationSignal?, callback: WalletCallback<WalletCheckoutPaymentResponse>)
Asynchronously previews a payment transaction for an active checkout session. This returns a preview of the payment details including fees and balance impact without committing the transaction.
Parameters
request
The request object containing necessary information to preview the payment.
cancellation
A signal for canceling the asynchronous operation (nullable).
callback
The callback to be invoked upon completion or error.