code: function keyEvent(evt) {
              if (evt.keyCode !== 8) {
                  lxSelect.activeSelectedIndex = -1;
              }
  
              if (!LxDropdownService.isOpen('dropdown-' + lxSelect.uuid)) {
                  lxSelect.activeChoiceIndex = -1;
              }
  
              switch (evt.keyCode) {
                  case 8:
                      _keyRemove();
                      break;
  
                  case 13:
                      _keySelect();
                      evt.preventDefault();
                      break;
  
                  case 37:
                      if (lxSelect.activeChoiceIndex > -1) {
                          _keyLeft();
                          evt.preventDefault();
                      }
                      break;
  
                  case 38:
                      _keyUp();
                      evt.preventDefault();
                      break;
  
                  case 39:
                      if (lxSelect.activeChoiceIndex > -1) {
                          _keyRight();
                          evt.preventDefault();
                      }
                      break;
  
  
                  case 40:
                      _keyDown();
                      evt.preventDefault();
                      break;
  
                  default:
                      break;
              }
          }
docs: Handle a key press event
  
  @param {Event} evt The key press event.