whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. @AtUriConverter.new() AtUri anchor,
    2. int limit,
    3. String? cursor,
    4. int depth,
    5. int parentHeight,
    6. @FeedGetCrosspostThreadSortConverter() FeedGetCrosspostThreadSort? sort,
    7. Map<String, dynamic>? $unknown,
    )?
)

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(@AtUriConverter()  AtUri anchor,  int limit,  String? cursor,  int depth,  int parentHeight, @FeedGetCrosspostThreadSortConverter()  FeedGetCrosspostThreadSort? sort,  Map<String, dynamic>? $unknown)?  $default,) {final _that = this;
switch (_that) {
case _FeedGetCrosspostThreadInput() when $default != null:
return $default(_that.anchor,_that.limit,_that.cursor,_that.depth,_that.parentHeight,_that.sort,_that.$unknown);case _:
  return null;

}
}