ng> When visual focus is on an option in this listbox implementation, DOM focus remains on the listbox element and the value of <code>aria-activedescendant</code> on the listbox refers to the descendant option that is visually indicated as focused.
          Where the following descriptions of keyboard commands mention focus, they are referring to the visual focus indicator, not DOM focus.
          For more information about this focus management technique, see
          <a href="../../../practices/keyboar