private void uninstallKeyboardNavigation() {
    if (myNextTabAction != null) {
      myNextTabAction.unregisterCustomShortcutSet(this);
      myNextTabAction = null;
    }
    if (myPreviousTabAction != null) {
      myPreviousTabAction.unregisterCustomShortcutSet(this);
      myPreviousTabAction = null;
    }
  }
private void uninstallKeyboardNavigation()