Sonata\Component\Delivery\ServiceDeliveryInterface::getCode PHP Method

    public function getCode();

 /**
  * {@inheritdoc}
  */
 public function setDeliveryMethod(ServiceDeliveryInterface $method = null)
 {
     $this->deliveryMethod = $method;
     $this->deliveryMethodCode = $method ? $method->getCode() : null;
 }