}

  public void testAutoCloseable() throws Exception {
    AutoCloseable autoCloseable = closeable1::close;
    ClosingFuture<String> closingFuture =
        ClosingFuture.submit(
            new ClosingCallable<String>() {
              @Override
              public String call(DeferredCloser closer) throws Exception {
                closer.eventuallyClose(autoCloseable, closingExecutor);
                return "foo";
              }

            log.error("Error during session finalization", e);
        } finally {
            super.finalize();
        }
    }

    /**
     * {@inheritDoc}
     *
     * @see java.lang.AutoCloseable#close()
     */
    @Override
    public void close() {
        release();
    }

    /**
     *
     */
    public void release() {

        }
    }

    /**
     * A holder for the directory context.
     */
    protected class DirContextHolder implements AutoCloseable {
        private final DirContext context;

        private int counter = 1;

        /**
         * Constructs a new directory context holder.
         *