public void setowner(StorageDomainOwnerType value) {
   if (value == null) {
     persistentOwner = null;
   } else {
     persistentOwner = value.getValue();
   }
 }
 public StorageDomainOwnerType getowner() {
   if (persistentOwner == null) {
     return null;
   }
   return StorageDomainOwnerType.forValue(persistentOwner);
 }