protected void addOption(OptionGroup group, String name, String displayableName, String desc, String defaultValue) { addOption(group, name, displayableName, desc, IOption.STRING, defaultValue);
protected void addOption(OptionGroup group, String name, String defaultValue) { addOption(group, name, IOption.STRING, defaultValue);
    protected void addOption(OptionGroup group, String name, String displayableName, String desc, String defaultValue) {        addOption(group, name, displayableName, desc, IOption.STRING, defaultValue);    }