}
  }

  @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

  }

  /** {@link AtomicHelper} based on {@link VarHandle}. */
  @J2ObjCIncompatible
  // We use this class only after confirming that VarHandle is available at runtime.
  @SuppressWarnings("Java8ApiChecker")
  @IgnoreJRERequirement
  private static final class VarHandleAtomicHelper extends AtomicHelper {
    static final VarHandle waiterThreadUpdater;
    static final VarHandle waiterNextUpdater;