@Bean
        public PrincipalAttributesRepositoryCache principalAttributesRepositoryCache() {
            return new DefaultPrincipalAttributesRepositoryCache();
        }
Handles tests for {@link CachingPrincipalAttributesRepository}.

@author Misagh Moayyed
@since 4.1
core/cas-server-core/src/test/java/org/apereo/cas/authentication/principal/cache/CachingPrincipalAttributesRepositoryTests.java