// Test with null regex
        cmdList.clear();
        execJob.testAddFessCustomSystemProperties(cmdList, null);
        assertEquals(0, cmdList.size());

        // Test with empty regex
        cmdList.clear();
        execJob.testAddFessCustomSystemProperties(cmdList, "");
        assertEquals(0, cmdList.size());

        // Clean up
        System.clearProperty("custom.prop.one");

            if (logger.isDebugEnabled()) {
                logger.debug("Cannot clear session, not found. sessionId={}", sessionId);
            }
            return false;
        }
        // Verify ownership
        final String sessionUserId = session.getUserId();
        if (userId != null && !userId.equals(sessionUserId)) {
            logger.warn("Cannot clear session, userId mismatch. sessionId={}, requestUserId={}", sessionId, userId);

                try {
                    final int sessionIdListSize = finishedSessionIdList.size();
                    intervalControlHelper.setCrawlerRunning(true);

                    docList.clear();
                    accessResultList.clear();

                    updateTime = systemHelper.getCurrentTimeAsLong() - updateTime;

                    final long interval = updateInterval - updateTime;

- Check that locale code is in `supported.languages` in `fess_config.properties`
- Regenerate Java classes: `mvn dbflute:freegen`
- Rebuild project: `mvn clean package`
- Restart Fess application

### Translations not showing

- Clear browser cache
- Force language with `?browser_lang=[locale]` parameter
- Check property file encoding (should be UTF-8 or use Unicode escapes `\uXXXX`)

        assertEquals(2000, intervalControlHelper.getDelay());

        intervalControlHelper.ruleList.clear();

        intervalControlHelper.addIntervalRule("12:15", "12:15", "*", 3000);
        assertEquals(3000, intervalControlHelper.getDelay());

        intervalControlHelper.ruleList.clear();

        intervalControlHelper.addIntervalRule("12:15", "12:15", "3,5", 4000);

    public HtmlResponse index(final SearchForm form) {
        validate(form, messages -> {}, this::asDictIndexHtml);
        stemmerOverridePager.clear();
        return asHtml(path_AdminDictStemmeroverride_AdminDictStemmeroverrideJsp).renderWith(data -> {
            searchPaging(data, form);
        });
    }

    /**
     * Display a paginated list of stemmer override items.

    @Override
    protected boolean isUseOneTimeContainer() {
        return true;
    }

    @Test
    public void test_maxUsernameLength() throws IOException {
        FessProp.propMap.clear();
        FessConfig fessConfig = new FessConfig.SimpleImpl() {
            @Override
            public Integer getLdapMaxUsernameLengthAsInteger() {
                return Integer.valueOf(-1);
            }
        };

            for (int j = 0; j < 10; j++) {
                assertTrue("Thread " + i + " should find doc" + j, containsResults[i][j]);
            }
        }
    }

    /**
     * Test that clear operation on deleteUrlList is thread-safe.
     */
    @Test
    public void test_deleteUrlList_clearOperation() throws Exception {
        IndexUpdateCallback mockCallback = new IndexUpdateCallback() {

        }

        @Override
        protected void storeQueue(List<Tuple3<String, String, String>> taskList) {
            // Override to avoid database operations
            taskList.clear();
        }

        @Override
        protected String getImageFilename(final Map<String, Object> docMap) {
            // Override to avoid null pointer issues

    }

    public void mymodifyPropertyCancel(String propertyName) {
        __modifiedProperties.remove(propertyName);
    }

    public void clearModifiedInfo() {
        __modifiedProperties.clear();
    }

    public boolean hasModification() {
        return !__modifiedProperties.isEmpty();
    }

    protected EntityModifiedProperties newModifiedProperties() {