code: func (l *List) SetSelectedFocusOnly(focusOnly bool) *List {
  	l.selectedFocusOnly = focusOnly
  	return l
  }
docs: // SetSelectedFocusOnly sets a flag which determines when the currently selected
  // list item is highlighted. If set to true, selected items are only highlighted
  // when the list has focus. If set to false, they are always highlighted.