if (!subRoleSet.isEmpty()) {
            TimeoutManager.getInstance().addTimeoutTarget(() -> {
                sAMAccountGroupNameSet.stream().forEach(groupName -> {
                    getSAMAccountGroupName(bindDn, groupName).ifPresent(sAMAccountGroupName -> {
                        roleSet.add(systemHelper.getSearchRoleByGroup(normalizePermissionName(sAMAccountGroupName)));
                    });
                });

        // Blank bindDn should return empty
        OptionalEntity<String> result = ldapManager.getSAMAccountGroupName("", "testGroup");
        assertFalse(result.isPresent());

        result = ldapManager.getSAMAccountGroupName("   ", "testGroup");
        assertFalse(result.isPresent());
    }

    @Test
    public void test_getSAMAccountGroupName_withNullGroupName() {