question: returns the first selected item , or null . concode_field_sep Actor actor concode_elem_sep OrderedSet<T> selected concode_elem_sep boolean multiple concode_elem_sep T lastSelected concode_elem_sep boolean programmaticChangeEvents concode_elem_sep OrderedSet<T> old concode_elem_sep boolean toggle concode_elem_sep boolean isDisabled concode_elem_sep boolean required concode_field_sep void setActor concode_elem_sep void setRequired concode_elem_sep boolean fireChangeEvent concode_elem_sep void setDisabled concode_elem_sep void setProgrammaticChangeEvents concode_elem_sep void choose concode_elem_sep void remove concode_elem_sep void removeAll concode_elem_sep Iterator<T> iterator concode_elem_sep boolean getMultiple concode_elem_sep Array<T> toArray concode_elem_sep Array<T> toArray concode_elem_sep void setMultiple concode_elem_sep boolean isDisabled concode_elem_sep void setAll concode_elem_sep void setToggle concode_elem_sep boolean getToggle concode_elem_sep void add concode_elem_sep void set concode_elem_sep boolean hasItems concode_elem_sep boolean isEmpty concode_elem_sep void clear concode_elem_sep void revert concode_elem_sep T getLastSelected concode_elem_sep boolean contains concode_elem_sep int size concode_elem_sep void cleanup concode_elem_sep void addAll concode_elem_sep String toString concode_elem_sep OrderedSet<T> items concode_elem_sep void snapshot concode_elem_sep boolean getRequired concode_elem_sep void changed
target: T function ( ) { return selected . size == 0 ? null : selected . first ( ) ; }