@Override
    public void registerTenantAuthenticationHandlerBuilder(final TenantAuthenticationHandlerBuilder handler) {
        if (BeanSupplier.isNotProxy(handler)) {
            LOGGER.trace("Registering tenant authentication builder [{}] into the execution plan", handler);
            tenantAuthenticationHandlerBuilders.add(handler);
        }
    }
This is {@link DefaultAuthenticationEventExecutionPlan}.

@author Misagh Moayyed
@since 5.1.0
core/cas-server-core-authentication-api/src/main/java/org/apereo/cas/authentication/DefaultAuthenticationEventExecutionPlan.java