@Override
 public void execute() {
   BlockStorageUtils.removeBlockResources(uris(volumeIds), deletionType);
   // form is always passing hostId, never clusterId - need to figure out which it is.
   String hostOrClusterId = BlockStorageUtils.getHostOrClusterId(hostId);
   if (hostOrClusterId != null) {
     ExecutionUtils.addAffectedResource(hostOrClusterId.toString());
   }
 }