buildSingleDelivery example

throw ShippingException::shippingMethodNotFound($context->getShippingMethod()->getId());
        }

        /** @var ShippingMethodEntity $shippingMethod */
        $shippingMethod = $data->get($key);

        return $this->buildByUsingShippingMethod($cart, $shippingMethod, $context);
    }

    public function buildByUsingShippingMethod(Cart $cart, ShippingMethodEntity $shippingMethod, SalesChannelContext $context): DeliveryCollection
    {
        $delivery = $this->buildSingleDelivery($shippingMethod, $cart->getLineItems(), $context);

        if (!$delivery) {
            return new DeliveryCollection();
        }

        return new DeliveryCollection([$delivery]);
    }

    private function buildSingleDelivery(
        ShippingMethodEntity $shippingMethod,
        LineItemCollection $collection,