/**
* {@inheritdoc}
*/
public function updateLineItem(OrderInterface $cart, LineItemInterface $line_item)
{
/** @var \Drupal\commerce_order\Entity\LineItemInterface $original_line_item */
$original_line_item = $this->lineItemStorage->loadUnchanged($line_item->id());
$line_item->save();
$event = new CartLineItemUpdateEvent($cart, $line_item, $original_line_item);
$this->eventDispatcher->dispatch(CartEvents::CART_LINE_ITEM_UPDATE, $event);
}
