constructor(props) {
        super(props);
        this.errorId = uniqueId('error-message');
        this.groupNameId = props.name || uniqueId('options');
        this.optionsRefs = this.generateRefsForOptions();

        this.state = {
            options: this.addRefsToOptions(props.options),
            markerLeft: 0,
            markerWidth: 0,
        };
    }
A button list that can have a single entry checked at any one time.
@category Form