@Override
    protected void doInitialize() {
        val flow = getLoginFlow();
        if (flow != null) {
            createStartSpnegoAction(flow);
            createEvaluateSpnegoClientAction(flow);
            createSpnegoActionState(flow);
            augmentWebflowToStartSpnego(flow);
        }
    }
The {@link SpnegoWebflowConfigurer} is responsible for
adjusting the CAS webflow context for spnego integration.

@author Misagh Moayyed
@since 4.2
support/cas-server-support-spnego-webflow/src/main/java/org/apereo/cas/web/flow/SpnegoWebflowConfigurer.java