mapOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? mapOrNull<TResult extends Object?>({
  1. TResult? relationship(
    1. UGraphGetRelationshipsRelationshipsRelationship value
    )?,
  2. TResult? notFoundActor(
    1. UGraphGetRelationshipsRelationshipsNotFoundActor value
    )?,
  3. TResult? unknown(
    1. UGraphGetRelationshipsRelationshipsUnknown value
    )?,
})

A variant of map that fallback to returning null.

It is equivalent to doing:

switch (sealedClass) {
  case final Subclass value:
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs TResult? mapOrNull<TResult extends Object?>({TResult? Function( UGraphGetRelationshipsRelationshipsRelationship value)?  relationship,TResult? Function( UGraphGetRelationshipsRelationshipsNotFoundActor value)?  notFoundActor,TResult? Function( UGraphGetRelationshipsRelationshipsUnknown value)?  unknown,}){
final _that = this;
switch (_that) {
case UGraphGetRelationshipsRelationshipsRelationship() when relationship != null:
return relationship(_that);case UGraphGetRelationshipsRelationshipsNotFoundActor() when notFoundActor != null:
return notFoundActor(_that);case UGraphGetRelationshipsRelationshipsUnknown() when unknown != null:
return unknown(_that);case _:
  return null;

}
}