public void printHelp() {
        HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp("vespa-stat [options]",
                "Fetch statistics about a specific user, group, bucket, gid or document.", options, "", false);
    }
Responsible for parsing the command line arguments and presenting the help page

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