public function post(
        $chargeId,
        $refundAmount,
        $currencyCode,
        $softDescriptor = ''
    ) {
        $payload = [
            'chargeId' => $chargeId,
            'refundAmount' => [
                'amount' => $refundAmount,
                'currencyCode' => $currencyCode,
            ],
        ];
        if (!empty($softDescriptor)) {
            $payload['softDescriptor'] = $softDescriptor;
        }
        $headers = ['x-amz-pay-Idempotency-Key' => uniqid()];
        // $_ENV[SandboxSimulation::CREATE_REFUND_SIMCODE] = 'AmazonRejected';
        $headers = (new SandboxSimulation($this->module))->createRefundSetSimCodeIfSandbox($headers);

        try {
            $client = $this->module->getAmazonClient();
            $result = $client->createRefund($payload, $headers);
            if ($this->module->errors->hasError($result)) {
                $error = $this->module->errors->getAmzErrorResponse($result, $this);
                (new Logger())->logApiResponse(new Log(
                    $this->order->getChargePermissionId(),
                    Log::ACTION_ASYNC_REFUND,
                    $error->errorcode,
                    $refundAmount,
                    $error
                ));
                return $error;
            }
        } catch (\Exception $e) {
            return $this->module->errors->getErrorResponse(
                GenericErrorStore::AMAZON_PAY_SDK_CLIENT_EXCEPTION,
                [$e->getMessage()]
            );
        }

        $response = json_decode($result['response'], true);
        $details = $response['statusDetails'];
        $this->order->setRefundState(
            new State(
                $details['state'],
                $details['reasonCode'],
                $details['reasonDescription']
            ),
            $response['refundId'],
            $refundAmount
        );
        (new Logger())->logApiResponse(new Log(
            $this->order->getChargePermissionId(),
            Log::ACTION_ASYNC_REFUND,
            Log::RESPONSE_OK,
            $refundAmount
        ));
        return $result;
    }