@Bean
        @ConditionalOnMissingBean(name = "googleAuthenticatorFlowRegistry")
        @RefreshScope(proxyMode = ScopedProxyMode.DEFAULT)
        public FlowDefinitionRegistry googleAuthenticatorFlowRegistry(
            final CasConfigurationProperties casProperties,
            final ConfigurableApplicationContext applicationContext,
            @Qualifier(CasWebflowConstants.BEAN_NAME_FLOW_BUILDER_SERVICES)
            final FlowBuilderServices flowBuilderServices,
            @Qualifier(CasWebflowConstants.BEAN_NAME_FLOW_BUILDER)
            final FlowBuilder flowBuilder) {
            val builder = new FlowDefinitionRegistryBuilder(applicationContext, flowBuilderServices);
            builder.addFlowBuilder(flowBuilder, casProperties.getAuthn().getMfa().getGauth().getId());
            return builder.build();
        }
This is {@link GoogleAuthenticatorConfiguration}.

@author Misagh Moayyed
@since 5.0.0
support/cas-server-support-gauth/src/main/java/org/apereo/cas/config/GoogleAuthenticatorConfiguration.java