shippingCosts example

 {
        $this->ids = $ids;
        $this->id = $ids->get($orderNumber);
        $this->billingAddressId = $ids->get('billing_address');
        $this->currencyId = Defaults::CURRENCY;
        $this->stateId = $this->getStateMachineState();
        $this->orderNumber = $orderNumber;
        $this->orderDateTime = (new \DateTime())->format(Defaults::STORAGE_DATE_TIME_FORMAT);
        $this->currencyFactor = 1.0;

        $this->price(420.69);
        $this->shippingCosts(0);
        $this->add('itemRounding', json_decode(json_encode(new CashRoundingConfig(2, 0.01, true), \JSON_THROW_ON_ERROR), true, 512, \JSON_THROW_ON_ERROR));
        $this->add('totalRounding', json_decode(json_encode(new CashRoundingConfig(2, 0.01, true), \JSON_THROW_ON_ERROR), true, 512, \JSON_THROW_ON_ERROR));
    }

    public function price(float $amount): self
    {
        $this->price = new CartPrice(
            $amount,
            $amount,
            $amount,
            new CalculatedTaxCollection(),