public boolean isUserAccount() {
        return flags().contains(Flags.NORMAL_ACCOUNT);
    }
@Test
    void isUserAccount() {
        assertThat(ADUserAccountControl.create(256).isUserAccount()).isFalse();
        assertThat(ADUserAccountControl.create(512).isUserAccount()).isTrue();
        assertThat(ADUserAccountControl.create(66048).isUserAccount()).isTrue();
        assertThat(ADUserAccountControl.create(66050).isUserAccount()).isTrue();
        assertThat(ADUserAccountControl.create(532480).isUserAccount()).isFalse();
    }