code: function _keyRight() {
              if (lxSelect.choicesViewMode !== 'panes' || lxSelect.activeChoiceIndex === -1) {
                  return;
              }
  
              var paneOpened = _openPane((lxSelect.panes.length - 1), lxSelect.activeChoiceIndex, true);
  
              if (paneOpened) {
                  lxSelect.activeChoiceIndex = 0;
              } else {
                  _keySelect();
              }
          }
docs: When the right key is pressed and we are displaying the choices in pane mode, open the currently selected
  pane.