when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>({
  1. required TResult embedExternalViewArticle(
    1. EmbedExternalViewArticle data
    ),
  2. required TResult embedExternalViewArticlePublication(
    1. EmbedExternalViewArticlePublication data
    ),
  3. required TResult embedExternalViewGallery(
    1. EmbedExternalViewGallery data
    ),
  4. required TResult embedExternalViewLivestream(
    1. EmbedExternalViewLivestream data
    ),
  5. 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( EmbedExternalViewArticle data)  embedExternalViewArticle,required TResult Function( EmbedExternalViewArticlePublication data)  embedExternalViewArticlePublication,required TResult Function( EmbedExternalViewGallery data)  embedExternalViewGallery,required TResult Function( EmbedExternalViewLivestream data)  embedExternalViewLivestream,required TResult Function( Map<String, dynamic> data)  unknown,}) {final _that = this;
switch (_that) {
case UEmbedGetEmbedExternalViewDataEmbedExternalViewArticle():
return embedExternalViewArticle(_that.data);case UEmbedGetEmbedExternalViewDataEmbedExternalViewArticlePublication():
return embedExternalViewArticlePublication(_that.data);case UEmbedGetEmbedExternalViewDataEmbedExternalViewGallery():
return embedExternalViewGallery(_that.data);case UEmbedGetEmbedExternalViewDataEmbedExternalViewLivestream():
return embedExternalViewLivestream(_that.data);case UEmbedGetEmbedExternalViewDataUnknown():
return unknown(_that.data);}
}