Option vectorClassOpt = obuilder.withLongName("vectorclass").withRequired(true).withShortName("e")
.withArgument(abuilder.withName("vectorclass").withMinimum(1).withMaximum(1).create())
.withDescription("Class name of vector implementation to use.").create();
Group group = gbuilder.withName("Options").withOption(inputOpt).withOption(clustersOpt).withOption(
outputOpt).withOption(measureClassOpt).withOption(convergenceDeltaOpt).withOption(maxIterOpt)
.withOption(numMapOpt).withOption(numRedOpt).withOption(doCanopyOpt).withOption(mOpt).withOption(
vectorClassOpt).withOption(helpOpt).create();
try {