pkg/front_end/testcases/nnbd/issue42504.dart.textual_outline.expect

abstract class ImageStreamCompleter {
  void addListener();
}

class _LiveImage {
  factory _LiveImage(ImageStreamCompleter a) => throw UnimplementedError();
}

abstract class Foo {
  dynamic get _pendingImages;
  ImageStreamCompleter? putIfAbsent(
      Object key, ImageStreamCompleter loader()) {}
}

main() {}