ShadowRootInit constructor
      
      ShadowRootInit({ 
    
    
- required ShadowRootMode mode,
- bool delegatesFocus,
- SlotAssignmentMode slotAssignment,
- bool clonable,
- bool serializable,
Implementation
external factory ShadowRootInit({
  required ShadowRootMode mode,
  bool delegatesFocus,
  SlotAssignmentMode slotAssignment,
  bool clonable,
  bool serializable,
});