protected function doVerifyWithPayPal($requestData)
    {
        $callerService = $this->getCommunicationService();
        $payPalPayPalRequest = $this->getPayPalRequest();
        foreach ($requestData as $requestParameterName => $requestParameterValue) {
            $payPalPayPalRequest->setParameter($requestParameterName, $requestParameterValue);
        }
        $responseDoVerifyWithPayPal = $callerService->doVerifyWithPayPal($payPalPayPalRequest, $requestData['charset']);

        return $responseDoVerifyWithPayPal;
    }