when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>({
  1. required TResult richtextFacetMention(
    1. RichtextFacetMention data
    ),
  2. required TResult richtextFacetLink(
    1. RichtextFacetLink data
    ),
  3. required TResult richtextFacetTag(
    1. RichtextFacetTag 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( RichtextFacetMention data)  richtextFacetMention,required TResult Function( RichtextFacetLink data)  richtextFacetLink,required TResult Function( RichtextFacetTag data)  richtextFacetTag,required TResult Function( Map<String, dynamic> data)  unknown,}) {final _that = this;
switch (_that) {
case URichtextFacetFeaturesRichtextFacetMention():
return richtextFacetMention(_that.data);case URichtextFacetFeaturesRichtextFacetLink():
return richtextFacetLink(_that.data);case URichtextFacetFeaturesRichtextFacetTag():
return richtextFacetTag(_that.data);case URichtextFacetFeaturesUnknown():
return unknown(_that.data);}
}