@Override
 protected void setProtocol(StoragePool pool, Volume volume, VirtualPool vPool) {
   if (null == volume.getProtocol()) {
     volume.setProtocol(new StringSet());
   }
   volume.getProtocol().addAll(vPool.getProtocols());
 }
 @Override
 public void process() {
   DbClient dbClient = getDbClient();
   List<URI> volumeURIs = dbClient.queryByType(Volume.class, false);
   Iterator<Volume> volumesIter = dbClient.queryIterativeObjects(Volume.class, volumeURIs);
   while (volumesIter.hasNext()) {
     Volume volume = volumesIter.next();
     URI systemURI = volume.getStorageController();
     if (!NullColumnValueGetter.isNullURI(systemURI)) {
       StorageSystem system = dbClient.queryObject(StorageSystem.class, systemURI);
       if ((system != null)
           && (DiscoveredDataObject.Type.vplex.name().equals(system.getSystemType()))) {
         // This is a VPLEX volume. If not already set,
         // set the protocols to FC.
         StringSet protocols = volume.getProtocol();
         if (protocols == null) {
           protocols = new StringSet();
           protocols.add(StorageProtocol.Block.FC.name());
           volume.setProtocol(protocols);
           dbClient.persistObject(volume);
         }
       }
     }
   }
 }