/**
  * Tests conversion of {@link PaymentRequest} from XML file for receipt-in payment types.
  */
 public function testPaymentRequestXmlFromFileReceiptInOTB()
 {
     $path = SampleXmlValidationUtils::RECEIPT_IN_OTB_PAYMENT_REQUEST_XML_PATH;
     $prefix = __DIR__ . '/../../../resources';
     $xml = file_get_contents($prefix . $path);
     //unmarshal back to response
     /* @var PaymentRequest $fromXmlRequest */
     $fromXmlRequest = new PaymentRequest();
     $fromXmlRequest = $fromXmlRequest->fromXml($xml);
     SampleXmlValidationUtils::checkUnmarshalledReceiptInOTBPaymentRequest($fromXmlRequest, $this);
 }