buildFinalizePayload example

        }

        return new RedirectResponse($response->getRedirectUrl());
    }

    public function finalize(AsyncPaymentTransactionStruct $transaction, Request $request, SalesChannelContext $salesChannelContext): void
    {
        $queryParameters = $request->query->all();
        unset($queryParameters['_sw_payment_token']);

        $payload = $this->buildFinalizePayload($transaction, $queryParameters);
        $app = $this->getAppPaymentMethod($transaction->getOrderTransaction())->getApp();
        if ($app === null) {
            throw PaymentException::asyncFinalizeInterrupted($transaction->getOrderTransaction()->getId(), 'App not defined');
        }

        $url = $this->getAppPaymentMethod($transaction->getOrderTransaction())->getFinalizeUrl();
        if ($url === null) {
            throw PaymentException::asyncFinalizeInterrupted($transaction->getOrderTransaction()->getId(), 'Finalize URL not defined');
        }

        try {