getShippingDateEarliest example

$this->eventDispatcher->dispatch($event);

        return $salesChannelContext;
    }

    private function convertDeliveries(OrderDeliveryCollection $orderDeliveries, LineItemCollection $lineItems): DeliveryCollection
    {
        $cartDeliveries = new DeliveryCollection();

        foreach ($orderDeliveries as $orderDelivery) {
            $deliveryDate = new DeliveryDate(
                $orderDelivery->getShippingDateEarliest(),
                $orderDelivery->getShippingDateLatest()
            );

            $deliveryPositions = new DeliveryPositionCollection();

            if ($orderDelivery->getPositions() === null) {
                continue;
            }

            foreach ($orderDelivery->getPositions() as $position) {
                if ($position->getOrderLineItem() === null) {