pkg/front_end/parser_testcases/record/record_type_as_type_arguments.dart

void f() {
  final x = <(int, String)>[];
  List<(int, String)> y = [];
  Map<(int, String), (String, int)> z = {};
  List<(int, int) Function(bool) Function ((int, int) a)> y2 = [];
}