code: public final SIBUuid12 getGuaranteedTargetDestinationDefinitionUUID() {
          byte[] b = (byte[]) getHdr2().getField(JsHdr2Access.GUARANTEED_SET_TARGETDESTDEFUUID);
          if (b != null)
              return new SIBUuid12(b);
          return null;
      }
docs: /*
  Get the identity of the destination definition (not localisation)
  
  Javadoc description supplied by CommonMessageHeaders interface.