maybeWhen<TResult extends Object?> method

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

}
}