* @return The index updater.
     */
    public static IndexUpdater getIndexUpdater() {
        return getComponent(INDEX_UPDATER);
    }

    /**
     * Gets the key match helper component.
     * @return The key match helper.
     */
    public static KeyMatchHelper getKeyMatchHelper() {
        return getComponent(KEY_MATCH_HELPER);
    }

    /**
     * Gets the indexing helper component.

        }
    }

    /**
     * Stores a list of crawling information parameters in batch.
     * Sets the creation time for any parameters that don't have it set,
     * then performs a batch insert operation with immediate refresh.
     *
     * @param crawlingInfoParamList the list of crawling information parameters to store

            }
            latch.countDown();
        });

        Thread t2 = new Thread(() -> {
            for (int i = 0; i < 100; i++) {
                execJob.jvmOptions("-Xms" + i + "m");
            }
            latch.countDown();
        });

        t1.start();
        t2.start();

        assertTrue(latch.await(5, TimeUnit.SECONDS));

    }

    /**
     * Encode the JSP content.
     * @param value The value.
     * @return The encoded value.
     */
    public static String encodeJsp(final String value) {
        return value.replace("<% try{ %>", TRY_STATEMENT)

    }

    /**
     * Adds custom system properties that match the given regex pattern to the command list.
     *
     * @param cmdList the command list to add properties to
     * @param regex the regular expression pattern to match property names
     */
    protected void addFessCustomSystemProperties(final List<String> cmdList, final String regex) {

        // setup condition
        cb.query().addOrderBy_LastAccessTime_Desc();

        buildSearchCondition(failureUrlPager, cb);
    }

    /**
     * Deletes all failure URLs that match the criteria specified in the pager.
     *
     * @param failureUrlPager the pager containing deletion criteria
     */
    public void deleteAll(final FailureUrlPager failureUrlPager) {

        indexUpdater.setSessionIdList(sessionIdList);

        final CountDownLatch latch = new CountDownLatch(1);
        final AtomicBoolean errorOccurred = new AtomicBoolean(false);

        indexUpdater.setUncaughtExceptionHandler((t, e) -> {
            errorOccurred.set(true);
            latch.countDown();
        });

        // Set up test data service to return empty results

    /** Scroll timeout for search operations */
    protected String scrollForSearch = "1m";

    /** Batch size for delete operations */
    protected int sizeForDelete = 100;

    /** Scroll timeout for delete operations */
    protected String scrollForDelete = "1m";

    /** Batch size for update operations */
    protected int sizeForUpdate = 100;

    /** Scroll timeout for update operations */

        assertEquals("role1", roleNames[0]);
        assertEquals("role2", roleNames[1]);
    }

    @Test
    public void test_getRoleNames_empty() {
        // Test when no roles match the prefix
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            @Override
            public String getRoleSearchRolePrefix() {
                return "R";
            }

            }
            return consumer.test(configId, url);
        } catch (final ThumbnailGenerationException e) {
            if (e.getCause() == null) {
                logger.debug(e.getMessage());
            } else {
                logger.warn("Failed to process thumbnail: id={}", id, e);
            }
        } catch (final Exception e) {
            logger.warn("Failed to process thumbnail: id={}", id, e);