@Override
    public void close() throws IOException {
      latch.countDown();
    }

    boolean awaitClosed() {
      return awaitUninterruptibly(latch, 10, SECONDS);
    }

    boolean stillOpen() {
      return !awaitUninterruptibly(latch, 1, SECONDS);
    }

    @Override
    public String toString() {
      return name;
    }
  }