ShipmentItemCollection::isExistsBasketItem

protected function isExistsBasketItem(BasketItem $basketItem)
{
	/** @var ShipmentItem $shipmentItem */
	foreach ($this->collection as $shipmentItem)
	{
		if ($shipmentItem->getBasketCode() == $basketItem->getBasketCode())
			return true;
	}

	return false;
}