when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String $type,
    2. String? deviceId,
    3. String? deviceName,
    4. @DraftPostConverter() List<DraftPost> posts,
    5. List<String>? langs,
    6. @UDraftPostgateEmbeddingRulesConverter() List<UDraftPostgateEmbeddingRules>? postgateEmbeddingRules,
    7. @UDraftThreadgateAllowConverter() List<UDraftThreadgateAllow>? threadgateAllow,
    8. 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,  String? deviceId,  String? deviceName, @DraftPostConverter()  List<DraftPost> posts,  List<String>? langs, @UDraftPostgateEmbeddingRulesConverter()  List<UDraftPostgateEmbeddingRules>? postgateEmbeddingRules, @UDraftThreadgateAllowConverter()  List<UDraftThreadgateAllow>? threadgateAllow,  Map<String, dynamic>? $unknown)  $default,) {final _that = this;
switch (_that) {
case _Draft():
return $default(_that.$type,_that.deviceId,_that.deviceName,_that.posts,_that.langs,_that.postgateEmbeddingRules,_that.threadgateAllow,_that.$unknown);case _:
  throw StateError('Unexpected subclass');

}
}