/**
* Add risk score to the message we send to the pending queue.
* The IPN listener will combine this with scores based on CVV and AVS
* results returned with the authorization notification and determine
* whether to capture the payment or leave it for manual review.
* @return array
*/
protected function getStompTransaction()
{
$transaction = parent::getStompTransaction();
$transaction['risk_score'] = $this->risk_score;
return $transaction;
}