final StringBuilder textBuilder = new StringBuilder();

        // Add headers to text
        if (headers != null) {
            textBuilder.append(String.join(fieldSeparator, headers)).append(lineSeparator);
        }

        // Add rows to text
        for (final String[] row : rows) {
            if (headers != null && headers.length > 0) {

                return StringUtils.join(newInputs, ",");
            }
            return StringUtils.join(newInputs, ",") + "=>" + StringUtils.join(newOutputs, ",");
        }
        if (Arrays.equals(inputs, outputs)) {
            return StringUtils.join(inputs, ",");
        }
        return StringUtils.join(inputs, ",") + "=>" + StringUtils.join(outputs, ",");
    }

                    done.set(true);
                }
            }, Thread.currentThread().getName() + "-pdf");
            task.setDaemon(isDaemonThread);
            task.start();
            task.join(timeout);
            if (!done.get()) {
                for (int i = 0; i < 100 && !done.get(); i++) {
                    task.interrupt();
                    ThreadUtil.sleep(100L);
                }

    }

    /**
     * Test factory with non-AutoCloseable component type
     */
    public void test_destroyObject_nonAutoCloseable() throws Exception {
        TestComponent component = new TestComponent();
        PooledObject<TestComponent> pooledObject = new DefaultPooledObject<>(component);

        // Should not throw exception for non-AutoCloseable
        factory.destroyObject(pooledObject);

     *
     * @return The stopword as a string.
     */
    public String toLineString() {
        if (isUpdated()) {
            return StringUtils.join(newInput);
        }
        return StringUtils.join(input);
    }

     *
     * @return compact string representation of the mapping rule
     */
    public String toLineString() {
        if (isUpdated()) {
            return StringUtils.join(newInputs, ",") + "=>" + newOutput;
        }
        return StringUtils.join(inputs, ",") + "=>" + output;
    }

        client.admin().indices().prepareDelete(indexName).execute().actionGet();
        suggester.shutdown();
    }

    /**
     * Test getIndicesForAlias method with non-existing alias.
     * Verifies that the method returns an empty list for non-existing alias.
     */
    @Test
    @SuppressWarnings("unchecked")
    public void testGetIndicesForAlias_nonExistingAlias() throws Exception {

     * @return the string representation of this item
     */
    public String toLineString() {
        if (isUpdated()) {
            return StringUtils.join(newInput);
        }
        return StringUtils.join(input);
    }

                }
            });
        }

        for (Thread th : threads) {
            th.start();
        }
        for (Thread th : threads) {
            th.join();
        }
        assertEquals(num, count.get());
        assertEquals(num, valueSet.size());

        Set<String> valueSet2 = Collections.synchronizedSet(new HashSet<>());
        threads = new Thread[threadNum];

        }
        for (int i = 0; i < crawlerContext.numOfThread; i++) {
            threads[i].start();
        }

        // join
        for (int i = 0; i < crawlerContext.numOfThread; i++) {
            try {
                threads[i].join();
            } catch (final InterruptedException e) {