final ExecutorService closingExecutor = newSingleThreadExecutor();

  final TestCloseable closeable1 = new TestCloseable("closeable1");
  final TestCloseable closeable2 = new TestCloseable("closeable2");
  final TestCloseable closeable3 = new TestCloseable("closeable3");
  final TestCloseable closeable4 = new TestCloseable("closeable4");

  final Waiter waiter = new Waiter();

  final ExecutorService closingExecutor = newSingleThreadExecutor();

  final TestCloseable closeable1 = new TestCloseable("closeable1");
  final TestCloseable closeable2 = new TestCloseable("closeable2");
  final TestCloseable closeable3 = new TestCloseable("closeable3");
  final TestCloseable closeable4 = new TestCloseable("closeable4");

  final Waiter waiter = new Waiter();

   *     IOException}.
   */
  public static void close(@CheckForNull Closeable closeable, boolean swallowIOException)
      throws IOException {
    if (closeable == null) {
      return;
    }
    try {
      closeable.close();
    } catch (IOException e) {
      if (swallowIOException) {
        logger.log(Level.WARNING, "IOException thrown while closing Closeable.", e);
      } else {
        throw e;
      }
    }
  }

   *     IOException}.
   */
  public static void close(@CheckForNull Closeable closeable, boolean swallowIOException)
      throws IOException {
    if (closeable == null) {
      return;
    }
    try {
      closeable.close();
    } catch (IOException e) {
      if (swallowIOException) {
        logger.log(Level.WARNING, "IOException thrown while closing Closeable.", e);
      } else {
        throw e;
      }
    }
  }

    }
  }

  private void doClose(Closeable closeable, boolean swallowException) throws IOException {
    doClose(closeable, swallowException, !swallowException);
  }

  // Close the closeable using the Closeables, passing in the swallowException
  // parameter. expectThrown determines whether we expect an exception to
  // be thrown by Closeables.close;
  private void doClose(Closeable closeable, boolean swallowException, boolean expectThrown)

    }
  }

  private void doClose(Closeable closeable, boolean swallowException) throws IOException {
    doClose(closeable, swallowException, !swallowException);
  }

  // Close the closeable using the Closeables, passing in the swallowException
  // parameter. expectThrown determines whether we expect an exception to
  // be thrown by Closeables.close;
  private void doClose(Closeable closeable, boolean swallowException, boolean expectThrown)

     * in which {@code Cursor} is {@code Closeable}. To support older versions, pass a wrapper
     * {@code Closeable} with a method reference like {@code cursor::close}.
     *
     * <p>Note that this method is still binary-compatible between flavors because the erasure of
     * its parameter type is {@code Object}, not {@code AutoCloseable} or {@code Closeable}.
     *
     * @param closeable the object to be closed (see notes above)

    Throwable throwable = thrown;

    // close closeables in LIFO order
    while (!stack.isEmpty()) {
      Closeable closeable = stack.removeFirst();
      try {
        closeable.close();
      } catch (Throwable e) {
        if (throwable == null) {
          throwable = e;
        } else {
          suppressor.suppress(closeable, throwable, e);
        }
      }
    }

    Throwable throwable = thrown;

    // close closeables in LIFO order
    while (!stack.isEmpty()) {
      Closeable closeable = stack.removeFirst();
      try {
        closeable.close();
      } catch (Throwable e) {
        if (throwable == null) {
          throwable = e;
        } else {
          suppressor.suppress(closeable, throwable, e);
        }
      }
    }

     * in which {@code Cursor} is {@code Closeable}. To support older versions, pass a wrapper
     * {@code Closeable} with a method reference like {@code cursor::close}.
     *
     * <p>Note that this method is still binary-compatible between flavors because the erasure of
     * its parameter type is {@code Object}, not {@code AutoCloseable} or {@code Closeable}.
     *
     * @param closeable the object to be closed (see notes above)