setPositions example

$orderDelivery = new OrderDeliveryEntity();
        $orderDelivery->setId('order-delivery-id');
        $orderDelivery->setShippingDateEarliest(new \DateTimeImmutable());
        $orderDelivery->setShippingDateLatest(new \DateTimeImmutable());
        $orderDelivery->setShippingMethodId('order-delivery-shipping-method-id');
        $orderDelivery->setShippingOrderAddress($this->getOrderAddress());
        $orderDelivery->setShippingCosts(new CalculatedPrice(1, 1, new CalculatedTaxCollection(), new TaxRuleCollection()));
        if ($toManipulate !== 'order-delivery-no-shipping-method') {
            $orderDelivery->setShippingMethod(new ShippingMethodEntity());
        }
        if ($toManipulate !== 'order-delivery-no-position') {
            $orderDelivery->setPositions($orderDeliveryPositionCollection);
        }
        if ($toManipulate !== 'order-no-order-deliveries') {
            $orderDeliveryCollection->add($orderDelivery);
        }

        // Transactions         $orderTransactionCollection = new OrderTransactionCollection();

        $orderTransaction = new OrderTransactionEntity();
        $orderTransaction->setId('order-transaction-id');
        $orderTransaction->setPaymentMethodId('order-transaction-payment-method-id');