/**
  * add data from the inventory service to the order item
  *
  * @param  IOrderItem
  * @param  Mage_Sales_Model_Order_Item
  * @return self
  */
 public function injectReservationInfo(IOrderItem $itemPayload, Mage_Sales_Model_Order_Item $item)
 {
     $allocation = $this->getAllocationForItem($item);
     if ($allocation) {
         $itemPayload->setReservationId($allocation->getReservationId());
     }
     return $this;
 }