public function getDeliveryExecutionXml(DeliveryExecutionInterface $deliveryExecution)
    {
        return $this->getQtiResultXml($deliveryExecution->getDelivery()->getUri(), $deliveryExecution->getIdentifier());
    }
public function getDeliveryExecutionXml(DeliveryExecutionInterface $deliveryExecution)
    {
        return $this->getQtiResultXml($deliveryExecution->getDelivery()->getUri(), $deliveryExecution->getIdentifier());
    }
public function getDeliveryExecutionXml ( DeliveryExecutionInterface $ deliveryExecution ) { return $ this -> getQtiResultXml ( $ deliveryExecution -> getDelivery ( ) -> getUri ( ) , $ deliveryExecution -> getIdentifier ( ) ) ; }
Return delivery execution as xml of testtaker based on delivery

@param DeliveryExecutionInterface $deliveryExecution
@return string
Return delivery execution as xml of testtaker based on delivery