pathEntityListBackdrop abstract method
A backdrop widget behind the pathEntityListWidget. 在 pathEntityListWidget 后面的遮罩层
While the picker is switching path, this will displayed. If the user tapped on it, it'll collapse the list widget.
当选择器正在选择路径时,它会出现。用户点击它时,列表会折叠收起。
Implementation
Widget pathEntityListBackdrop(BuildContext context);