}

    OptionalThing<FessUserBean> createUser(String name, String[] permissions) {
        return OptionalThing.of(new FessUserBean(new TestUser(name, permissions)));
    }

    static class TestUser implements FessUser {

        private static final long serialVersionUID = 1L;

        private String name;

        private String[] permissions;

        TestUser(String name, String[] permissions) {