sku() 공개 메소드

public sku ( ) : string
리턴 string
 /**
  * @param PutBackProductToStock $command
  * @throws ProductNotFound
  */
 public function handle(PutBackProductToStock $command)
 {
     $product = $this->products->getBySku(new SKU($command->sku()));
     $product->putBackToStock();
 }