new TypeReference<List<StorageSourceNotification>>(){});
IStorageSourceService storageSource =
(IStorageSourceService)getContext().getAttributes().
get(IStorageSourceService.class.getCanonicalName());
storageSource.notifyListeners(notifications);
HashMap<String, Object> model = new HashMap<String,Object>();
model.put("output", "OK");
return model;
}