when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>({
  1. required TResult reportRef(
    1. ReportRef data
    ),
  2. required TResult subjectRef(
    1. SubjectRef data
    ),
  3. required TResult standingRef(
    1. StandingRef data
    ),
  4. required TResult unknown(
    1. Map<String, dynamic> data
    ),
})

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>({required TResult Function( ReportRef data)  reportRef,required TResult Function( SubjectRef data)  subjectRef,required TResult Function( StandingRef data)  standingRef,required TResult Function( Map<String, dynamic> data)  unknown,}) {final _that = this;
switch (_that) {
case UNotificationTargetReportRef():
return reportRef(_that.data);case UNotificationTargetSubjectRef():
return subjectRef(_that.data);case UNotificationTargetStandingRef():
return standingRef(_that.data);case UNotificationTargetUnknown():
return unknown(_that.data);}
}