docs: public Enumeration listOptions() {
      Vector result = new Vector();
  
      result.addElement(new Option(
          "\tThe MOA classifier to use.\n"
          + "\t(default: " + MOAUtils.toCommandLine(new DecisionStump()) + ")",
          "B", 1, "-B <classname + options>"));
  
      Enumeration en = super.listOptions();
      while (en.hasMoreElements())
        result.addElement(en.nextElement());
  
      return result.elements();
    }