private static int getTrace(CommandLine cl) throws ParseException {
        Number traceObj = (Number) cl.getParsedOptionValue(TRACE_OPTION);
        return traceObj != null ? traceObj.intValue() : 0;
    }
This class is responsible for parsing the command line arguments and print the help page.

@author bjorncs
vespaclient-java/src/main/java/com/yahoo/vespaget/CommandLineOptions.java