@Override
    protected Event doExecuteInternal(final RequestContext requestContext) {
        val request = WebUtils.getHttpServletRequestFromExternalWebflowContext(requestContext);
        val response = WebUtils.getHttpServletResponseFromExternalWebflowContext(requestContext);
        val mv = evaluator.evaluate(request, response.getStatus());
        mv.ifPresent(modelAndView -> modelAndView.getModel().forEach((k, v) -> requestContext.getFlowScope().put(k, v)));
        return null;
    }
This is {@link DelegatedClientAuthenticationFailureAction}.

@author Misagh Moayyed
@since 6.6.0
support/cas-server-support-pac4j-webflow/src/main/java/org/apereo/cas/web/flow/actions/DelegatedClientAuthenticationFailureAction.java