code: public final PersistenceType getJmsDeliveryMode() {
          if (getHdr2().getChoiceField(JsHdr2Access.JMSDELIVERYMODE) == JsHdr2Access.IS_JMSDELIVERYMODE_EMPTY) {
              return getDerivedJmsDeliveryMode();
          }
          else {
              Byte pType = (Byte) getHdr2().getField(JsHdr2Access.JMSDELIVERYMODE_DATA);
              return PersistenceType.getPersistenceType(pType);
          }
      }
docs: /*
  Get the value of the JMSDeliveryMode field from the message header.
  
  Javadoc description supplied by JsJmsMessage interface.