}
  }

  @SuppressWarnings("Java8ApiChecker")
  private ServerSocket makeMyServerExampleWithCleaner(AtomicBoolean cleanerRan) throws IOException {
    MyServerExampleWithCleaner myServer = new MyServerExampleWithCleaner(cleanerRan);
    assertThat(myServer.serverSocket.isClosed()).isFalse();
    return myServer.serverSocket;
  }

  @SuppressWarnings("Java8ApiChecker")
  @Test