/**
  * check Storage Volume exists in DB
  *
  * @param dbClient
  * @param nativeGuid
  * @return
  * @throws IOException
  */
 public static Volume checkStorageVolumeExistsInDB(DbClient dbClient, String nativeGuid)
     throws IOException {
   List<Volume> volumes = CustomQueryUtility.getActiveVolumeByNativeGuid(dbClient, nativeGuid);
   Iterator<Volume> volumesItr = volumes.iterator();
   if (volumesItr.hasNext()) {
     return volumesItr.next();
   }
   return null;
 }