docs: private Clustering<Model> generateDefaultClustering() {
      final Database db = ResultUtil.findDatabase(hier);
      Clustering<Model> c = null;
      try {
        // Try to cluster by labels
        ByLabelHierarchicalClustering split = new ByLabelHierarchicalClustering();
        c = split.run(db);
      }
      catch(NoSupportedDataTypeException e) {
        // Put everything into one
        c = new TrivialAllInOne().run(db);
      }
      return c;
    }