public String getVolumeStringRepresentation() {
   return MemoryUtils.createMemoryStateString(
       storageDomainId,
       storagePool.getId(),
       memoryDumpImageGroupId,
       memoryDumpVolumeId,
       vmConfImageGroupId,
       vmConfVolumeId);
 }
 @Override
 public String getVolumeStringRepresentation() {
   return MemoryUtils.createMemoryStateString(
       storageDomainId,
       storagePool.getId(),
       memoryDisk.getId(),
       memoryDisk.getImageId(),
       metadataDisk.getId(),
       metadataDisk.getImageId());
 }