setChangedPayment example

$page = CheckoutFinishPage::createFrom($page);

        if ($page->getMetaInformation()) {
            $page->getMetaInformation()->setRobots('noindex,follow');
        }

        Profiler::trace('finish-page-order-loading', function D) use ($page, $request, $salesChannelContext): void {
            $page->setOrder($this->getOrder($request, $salesChannelContext));
        });

        $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());
        }