@Override
    protected void prepareMergedOutputModel(final Map<String, Object> model, final HttpServletRequest request,
                                            final HttpServletResponse response) throws Exception {
        super.prepareMergedOutputModel(model, request, response);
        prepareCasResponseAttributesForViewModel(model);
    }
Renders and prepares CAS3 views. This view is responsible
to just prep the base model, and delegates to
a the real view to render the final output.

@author Misagh Moayyed
@since 4.1.0
support/cas-server-support-validation-core/src/main/java/org/apereo/cas/web/view/Cas30ResponseView.java