private static void validateUser2(final Map<String, List<Object>> attrs) {
        assertNotNull(attrs);
        assertEquals(List.of("888-8888"), attrs.get("phone"));
        assertEquals(List.of(StringUtils.EMPTY), attrs.get("displayName"));
    }
This is {@link CachingPersonAttributeDaoTests}.

@author Misagh Moayyed
@since 7.1.0
support/cas-server-support-person-directory-core/src/test/java/org/apereo/cas/persondir/CachingPersonAttributeDaoTests.java