PayPal\Api\Item::setSku PHP Method

    public function setSku($sku)
    {
        $this->sku = $sku;
        return $this;
    }

 /**
  * @param string $name
  * @param int $currency
  * @param int $quantity
  * @param string $sku
  * @param int $price
  * @return Item
  */
 public static function createItem($name, $currency, $quantity, $sku, $price)
 {
     $item = new Item();
     $item->setName($name);
     $item->setCurrency($currency);
     $item->setQuantity($quantity);
     $item->setSku($sku);
     $item->setPrice($price);
     return $item;
 }