/**
  * @param ErpShipmentEntity $erpShipment
  * @param ShopifyOrderEntity $shopifyOrder
  */
 public function setFulfilledItems(ErpShipmentEntity $erpShipment, ShopifyOrderEntity $shopifyOrder)
 {
     /** @var ErpOrderItemEntity $item */
     foreach ($erpShipment->getShipmentItems() as $item) {
         /** @var ShopifyOrderLineItemEntity $shopifyItem */
         foreach ($shopifyOrder->getItems() as $shopifyItem) {
             if ($item->getSku() == $shopifyItem->getSku()) {
                 $shopifyItem->setIsFulfilled(1);
             }
         }
     }
 }