ge-dart">@override
String toString() {
  switch (index) {
    case _kTapIndex:
      return &#39;SemanticsAction.tap&#39;;
    case _kLongPressIndex:
      return &#39;SemanticsAction.longPress&#39;;
    case _kScrollLeftIndex:
      return &#39;SemanticsAction.scrollLeft&#39;;
    case _kScrollRightIndex:
      return &#39;SemanticsAction.scrollRight&#39;;
    case _kScrollUpIndex:
      return &#39;SemanticsAction.scrollUp&#39;;
    case _kScrollDownIndex:
      return &#39;SemanticsAction.scrollDown&#39;