public Options addOptionGroup ( OptionGroup group ) { if ( group . isRequired ( ) ) { requiredOpts . add ( group ) ; } for ( Option option : group . getOptions ( ) ) { // an Option cannot be required if it is in an // OptionGroup, either the group is required or // nothing is required option . setRequired ( false ) ; addOption ( option ) ; optionGroups . put ( option . getKey ( ) , group ) ; } return this ; }
Add the specified option group .