@Bean
        @ConditionalOnMissingBean(name = MultifactorAuthenticationProviderResolver.BEAN_NAME)
        @RefreshScope(proxyMode = ScopedProxyMode.DEFAULT)
        public MultifactorAuthenticationProviderResolver multifactorAuthenticationProviderResolver(
            final List<MultifactorAuthenticationPrincipalResolver> resolvers) {
            AnnotationAwareOrderComparator.sort(resolvers);
            return new DefaultMultifactorAuthenticationProviderResolver(resolvers);
        }
This is {@link CasCoreMultifactorAuthenticationWebflowAutoConfiguration}.

@author Travis Schmidt
@since 6.0.0
core/cas-server-core-webflow-mfa/src/main/java/org/apereo/cas/config/CasCoreMultifactorAuthenticationWebflowAutoConfiguration.java