SlidableDismissal constructor
      const
      SlidableDismissal({ 
    
    
- Key? key,
 - required Axis axis,
 - required SlidableController controller,
 - required Widget child,
 
Implementation
const SlidableDismissal({
  Key? key,
  required this.axis,
  required this.controller,
  required this.child,
}) : super(key: key);