public function stage(GatewayType $adapter, $normalized, &$stagedData)
 {
     if ($adapter->isBatchProcessor()) {
         // Only makes sense for real users.
         return;
     }
     if (!empty($normalized['returnto'])) {
         $returnto = $normalized['returnto'];
     } else {
         $returnto = '';
     }
     if (isset($normalized['payment_method']) && $normalized['payment_method'] === 'cc') {
         // Add order ID to the returnto URL, only if it's not already there.
         //TODO: This needs to be more robust (like actually pulling the
         //qstring keys, resetting the values, and putting it all back)
         //but for now it'll keep us alive.
         if ($adapter->getOrderIDMeta('generate') && !empty($returnto) && !strpos($returnto, 'order_id')) {
             $queryArray = array('order_id' => $normalized['order_id']);
             $stagedData['returnto'] = wfAppendQuery($returnto, $queryArray);
         }
     } else {
         // FIXME: An empty returnto should be handled by the result switcher instead.
         $stagedData['returnto'] = ResultPages::getThankYouPage($adapter);
     }
 }