whenOrNull<TResult extends Object?> method

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? $default(String? summary, String? description, dynamic value, String? externalValue, String? ref,)?)

A variant of when that fallback to returning null

It is equivalent to doing:

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

Implementation

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? Function( String? summary,  String? description,  dynamic value,  String? externalValue, @JsonKey(name: '\$ref')@_ExampleRefConverter()  String? ref)?  $default,) {final _that = this;
switch (_that) {
case ExampleObject() when $default != null:
return $default(_that.summary,_that.description,_that.value,_that.externalValue,_that.ref);case _:
  return null;

}
}