}

    @Test
    public void test_user_initials() {
        final User user = new User();
        assertNull(user.getInitials());

        user.setInitials("JD");
        assertEquals("JD", user.getInitials());
    }

    @Test
    public void test_user_physicalDeliveryOfficeName() {
        final User user = new User();

                        .forEach(v -> modifyDeleteEntry(modifyList, attrPostOfficeBox, v)));
        final String attrInitials = fessConfig.getLdapAttrInitials();
        OptionalUtil.ofNullable(user.getInitials())
                .filter(StringUtil::isNotBlank)
                .ifPresent(s -> modifyReplaceEntry(modifyList, attrInitials, s))
                .orElse(() -> getAttributeValueList(result, attrInitials).stream()