public void select() {
   AttributeController attributeController = Lookup.getDefault().lookup(AttributeController.class);
   attributeController.getModel(workspace).addAttributeListener(this);
   if (!autoRankings.isEmpty()) {
     autoTransformer.start();
   }
 }
 public void addAutoRanking(Ranking ranking, Transformer transformer) {
   AutoRanking autoRanking = new AutoRanking(ranking, transformer);
   removeAutoRanking(transformer);
   autoRankings.add(autoRanking);
   autoTransformer.start();
 }