public List<String> getRoles() {
        ArrayList<String> sortedRoles = new ArrayList<>(roles);
        Collections.sort(sortedRoles);
        return sortedRoles;
    }
@Test
    public void shouldReturnSortedRoles() {
        UserModel foo = new UserModel(new User("foo", new ArrayList<>(), "foo@bar.com", false), List.of("bbb", "aaa", "BBB"), true);
        assertThat(foo.getRoles(), is(List.of("BBB", "aaa", "bbb")));
    }