public function getIndex(Cart $cart)
{
// todo detect multiple shipments
$number = 1;
if (!($shipment = $cart->getShipment($number))) {
$shipment = entity('cart_shipment')->create(['number' => $number]);
$cart->update(['shipments' => [$shipment]]);
}
return redirect('cart/shipment/' . $shipment->number);
}
