 <tr data-test-id="textbox-key-down-arrow">
              <th><kbd>Down Arrow</kbd></th>
              <td>
                <ul>
                  <li>If the listbox is displayed and a suggestion is selected, moves visual focus to the next suggested value.</li>
                  <li>If the textbox is empty and the listbox is not displayed, opens the listbox and moves visual focus to the first option.</li>
                  <li>In both cases DOM focus remains on the textbox.</li>
                </ul>
      