Thread th = new Thread(() -> {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException ignore) {}
            deferred.reject(new Exception());
        });
        th.start();

        final CountDownLatch latch = new CountDownLatch(1);
        deferred.promise().error(error -> latch.countDown());

    public synchronized void mark(final int readlimit) {
        inputStream.mark(readlimit);
    }

    /**
     * Tests if this input stream supports the mark and reset methods.
     *
     * @return true if this stream instance supports the mark and reset methods; false otherwise
     */
    @Override
    public boolean markSupported() {
        return inputStream.markSupported();
    }

    /**

 *   It is similar to a Promise in JavaScript.
 *   It allows you to register callbacks that will be executed when the computation is complete,
 *   either successfully (resolve) or with an error (reject).
 * </p>
 *
 * <p>
 *   The Deferred class has a Promise inner class that allows you to register callbacks
 *   to be executed when the computation is complete.

     * This method delegates to {@link FileInputStream#reset()}.
     *
     * @throws IOException if an I/O error occurs.
     */
    @Override
    public synchronized void reset() throws IOException {
        fileInputStream.reset();
    }

    /**
     * Skips over and discards {@code n} bytes of data from this input stream.

                    deferred.reject(new SuggesterException("Search failure. Failed shards num:" + searchResponse.getFailedShards()));
                } else {
                    deferred.resolve(createResponse(searchResponse));
                }
            }

            @Override
            public void onFailure(final Exception e) {
                deferred.reject(e);
            }
        });
    }

        assertEquals("http://example.com/test", transformer.getLastResponseData().getUrl());

        // Reset and verify
        transformer.reset();
        assertEquals(0, transformer.getTransformCallCount());
        assertNull(transformer.getLastResponseData());

        // Name should persist after reset
        assertEquals("workflowTransformer", transformer.getName());
    }

        }
        return deferred.promise();
    }

    /**
     * Processes the request.
     * @param client The OpenSearch client.
     * @param deferred The Deferred object to resolve or reject the response.
     */
    protected abstract void processRequest(Client client, Deferred<T> deferred);

    /**
     * Returns a validation error message, or null if there are no errors.

            if (preloadDate.indexOf("<urlset") >= 0) {
                // XML Sitemaps
                bis.reset();
                return parseXmlSitemaps(bis);
            }
            if (preloadDate.indexOf("<sitemapindex") >= 0) {
                // XML Sitemaps Index
                bis.reset();
                return parseXmlSitemapsIndex(bis);
            }

        assertEquals("http://example2.com", processedUrls.get(1));
        assertEquals("http://example3.com", processedUrls.get(2));

        // Reset and verify
        transformer.reset();
        assertEquals(0, transformer.getState());
        assertEquals(0, transformer.getProcessedUrls().size());
    }

    /**
     * Test multiple transformer instances
     */

    }

    @Override
    public void end() throws IOException {
        super.end();
        offsetAttr.setOffset(finalOffset, finalOffset);
    }

    @Override
    public void reset() throws IOException {
        super.reset();
        block.setLength(0);
        prevToken = null;
        readBufferIndex = BUFFER_SIZE;
        readBufferLen = 0;
        ch = 0;
        blkStart = 0;
        nextBlkStart = 0;