maybeWhen<TResult extends Object?> method

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>(TResult $default(String $type, ChatPreference chat, FilterablePreference follow, FilterablePreference like, FilterablePreference likeViaRepost, FilterablePreference mention, FilterablePreference quote, FilterablePreference reply, FilterablePreference repost, FilterablePreference repostViaRepost, Preference starterpackJoined, Preference subscribedPost, Preference unverified, Preference verified, Map<String, dynamic>? $unknown,)?, { required TResult orElse(), })

A variant of when that fallback to an orElse callback.

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return orElse();
}

Implementation

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>(TResult Function( String $type, @ChatPreferenceConverter()  ChatPreference chat, @FilterablePreferenceConverter()  FilterablePreference follow, @FilterablePreferenceConverter()  FilterablePreference like, @FilterablePreferenceConverter()  FilterablePreference likeViaRepost, @FilterablePreferenceConverter()  FilterablePreference mention, @FilterablePreferenceConverter()  FilterablePreference quote, @FilterablePreferenceConverter()  FilterablePreference reply, @FilterablePreferenceConverter()  FilterablePreference repost, @FilterablePreferenceConverter()  FilterablePreference repostViaRepost, @PreferenceConverter()  Preference starterpackJoined, @PreferenceConverter()  Preference subscribedPost, @PreferenceConverter()  Preference unverified, @PreferenceConverter()  Preference verified,  Map<String, dynamic>? $unknown)?  $default,{required TResult orElse(),}) {final _that = this;
switch (_that) {
case _Preferences() when $default != null:
return $default(_that.$type,_that.chat,_that.follow,_that.like,_that.likeViaRepost,_that.mention,_that.quote,_that.reply,_that.repost,_that.repostViaRepost,_that.starterpackJoined,_that.subscribedPost,_that.unverified,_that.verified,_that.$unknown);case _:
  return orElse();

}
}