question: public static String generateNativeGuid ( DbClient dbClient , Volume volume ) throws IOException { StorageSystem device = dbClient . queryObject ( StorageSystem . class , volume . getStorageController ( ) ) ; return String . format ( "%s+%s+" + VOLUME + "+%s" , _deviceTypeMap . get ( device . getSystemType ( ) ) , device . getSerialNumber ( ) , volume . getNativeId ( ) ) ; }
target:  Generates the format StorageSystem+SerialNumber+VOLUME+NativeId native guid for Volume Objects