asStackWidget method
      
Stack
asStackWidget({ 
    
- AlignmentGeometry alignment = AlignmentDirectional.topStart,
- TextDirection? textDirection,
- StackFit fit = StackFit.loose,
- Clip clipBehavior = Clip.hardEdge,
转换为 Stack,支持重叠布局
Implementation
Stack asStackWidget({
  AlignmentGeometry alignment = AlignmentDirectional.topStart,
  TextDirection? textDirection,
  StackFit fit = StackFit.loose,
  Clip clipBehavior = Clip.hardEdge,
}) {
  return Stack(
    alignment: alignment,
    textDirection: textDirection,
    fit: fit,
    clipBehavior: clipBehavior,
    children: this,
  );
}