when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String $type,
    2. bool? muted,
    3. ListViewBasic? mutedByList,
    4. bool? blockedBy,
    5. AtUri? blocking,
    6. ListViewBasic? blockingByList,
    7. AtUri? following,
    8. AtUri? followedBy,
    9. KnownFollowers? knownFollowers,
    10. ActivitySubscription? activitySubscription,
    11. Map<String, dynamic>? $unknown,
    )
)

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?>(TResult Function( String $type,  bool? muted, @ListViewBasicConverter()  ListViewBasic? mutedByList,  bool? blockedBy, @AtUriConverter()  AtUri? blocking, @ListViewBasicConverter()  ListViewBasic? blockingByList, @AtUriConverter()  AtUri? following, @AtUriConverter()  AtUri? followedBy, @KnownFollowersConverter()  KnownFollowers? knownFollowers, @ActivitySubscriptionConverter()  ActivitySubscription? activitySubscription,  Map<String, dynamic>? $unknown)  $default,) {final _that = this;
switch (_that) {
case _ViewerState():
return $default(_that.$type,_that.muted,_that.mutedByList,_that.blockedBy,_that.blocking,_that.blockingByList,_that.following,_that.followedBy,_that.knownFollowers,_that.activitySubscription,_that.$unknown);case _:
  throw StateError('Unexpected subclass');

}
}