@Test
    public void test_isEditable_custom() {
        // Test custom implementation that returns true
        FessUser user = new TestEditableFessUser("testuser", true);
        assertTrue(user.isEditable());

        // Test custom implementation that returns false
        user = new TestEditableFessUser("testuser", false);
        assertFalse(user.isEditable());
    }

    @Test
    public void test_refresh_default() {