/**
* Set refund transaction id to payment object for informational purposes
* Candidate to be deprecated:
* there can be multiple refunds per payment, thus payment.refund_transaction_id doesn't make big sense
*
* @param Invoice $invoice
* @param Payment $payment
* @return $this
*/
public function processBeforeRefund($invoice, $payment)
{
$payment->setRefundTransactionId($invoice->getTransactionId());
return $this;
}
