pkg/compiler/test/sourcemaps/test_files/validator_test_file.dart

// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

class HelloClass {
  void printHello() {
    () {
      print('Hello World!');
    }();
  }
}

void main() {
  () {
    HelloClass helloClass = HelloClass();
    helloClass.printHello();
  }();
}