setRounding example

$page->setChangedPayment((bool) $request->get('changedPayment', false));

        $page->setPaymentFailed((bool) $request->get('paymentFailed', false));

        $this->eventDispatcher->dispatch(
            new CheckoutFinishPageLoadedEvent($page, $salesChannelContext, $request)
        );

        if ($page->getOrder()->getItemRounding()) {
            $salesChannelContext->setItemRounding($page->getOrder()->getItemRounding());
            $salesChannelContext->getContext()->setRounding($page->getOrder()->getItemRounding());
        }
        if ($page->getOrder()->getTotalRounding()) {
            $salesChannelContext->setTotalRounding($page->getOrder()->getTotalRounding());
        }

        return $page;
    }

    /** * @throws CustomerNotLoggedInException * @throws InconsistentCriteriaIdsException * @throws RoutingException * @throws OrderException */