docs: @SuppressWarnings("unchecked")
    public static void setDefaultHandlerVisualizer() {
      defaultHandlers = new ArrayList<>(1);
      Class<? extends ResultHandler> clz;
      try {
        clz = (Class<? extends ResultHandler>) Thread.currentThread().getContextClassLoader().loadClass(//
            "de.lmu.ifi.dbs.elki.result.AutomaticVisualization");
      }
      catch(ClassNotFoundException e) {
        clz = ResultWriter.class;
      }
      defaultHandlers.add(clz);
    }