@Test
    public void test_isValidVirtualHostPath_emptyPath() throws Exception {
        setupVirtualHostHelper();

        Boolean result = invokeIsValidVirtualHostPath("");
        assertTrue("Empty path should be valid (default host)", result);
    }

    @Test
    public void test_isValidVirtualHostPath_nullPath() throws Exception {
        setupVirtualHostHelper();

        OptionalEntity<String> emptyOptional = OptionalUtil.ofNullable(nullValue);

        assertFalse(emptyOptional.isPresent());
        assertEquals("default", emptyOptional.orElse("default"));

        // Test that empty optional returns null instead of throwing
        assertNull(emptyOptional.orElse(null));
    }

    @Test
    public void test_ofNullable_multipleTypesInSequence() {

        }
    }

    // Test getScriptEngine with empty string
    @Test
    public void test_getScriptEngine_emptyString() {
        try {
            scriptEngineFactory.getScriptEngine("");
            fail("Should throw ScriptEngineException for empty string");
        } catch (ScriptEngineException e) {
            assertEquals(" is not found.", e.getMessage());

        default:
            break;
        }
        return OptionalEntity.empty();
    }

    /**
     * Creates a RequestHeader entity from the provided form data.
     *
     * @param form the form containing the request header data
     * @return optional entity containing the request header data, or empty if creation fails
     */

            // Verify the file was created and contains content
            assertTrue("Thread dump file should exist", Files.exists(tempFile));
            assertTrue("Thread dump file should not be empty", Files.size(tempFile) > 0);

            // Verify the content contains thread information
            String content = new String(Files.readAllBytes(tempFile), Constants.CHARSET_UTF_8);

                            </div>
                            <%-- List --%>
                            <c:if test="${fn:length(dictFiles) == 0}">
                                <div class="row top10"><div class="col-sm-12 empty-list-placeholder"><i class="fa fa-info-circle text-primary" aria-hidden="true"></i>
                                        <la:message key="labels.list_could_not_find_crud_table"/>
                                    </div>

    /** Status code representing completed/done state. */
    public static final int DONE_STATUS = 9999;

    /** Default value for ignore failure type (empty string). */
    public static final String DEFAULT_IGNORE_FAILURE_TYPE = StringUtil.EMPTY;

    /** Default failure count value (-1 indicates no limit). */
    public static final Integer DEFAULT_FAILURE_COUNT = -1;

            logger.debug("Login failed for user: {}", username, e);
        }
        return OptionalEntity.empty();
    }

    /**
     * Checks if the specified LDAP user is allowed to have empty group and role permissions.
     *
     * @param ldapUser the LDAP user to check
     * @return true if empty permissions are allowed, false otherwise
     */
    protected boolean allowEmptyGroupAndRole(final LdapUser ldapUser) {

            private static final long serialVersionUID = 1L;

            @Override
            public String get(String key) {
                // Override to return empty string instead of null to avoid NullPointerException
                return "";
            }

            @Override
            public String getIndexFieldTitle() {
                return "title";
            }

     * @param runtime The job runtime.
     */
    protected void process(final LaJobRuntime runtime) {
        if (!runtime.getParameterMap().containsKey(Constants.SCHEDULED_JOB)) {
            logger.warn("Scheduled job is empty: key={}", Constants.SCHEDULED_JOB);
            return;
        }
        runtime.stopIfNeeds();

        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();