Option threshold2Opt = obuilder.withLongName("threshold_2").withRequired(false).withShortName("t2")
        .withArgument(abuilder.withName("threshold_2").withMinimum(1).withMaximum(1).create())
        .withDescription("The T1 distance threshold.").create();
    
    Group group = gbuilder.withName("Options").withOption(inputOpt).withOption(outputOpt)
        .withOption(modelOpt).withOption(helpOpt).withOption(convergenceDeltaOpt).withOption(threshold1Opt)
        .withOption(maxIterOpt).withOption(threshold2Opt).create();
    
    try {
      Parser parser = new Parser();