protected void createDuoSuccessEndState(final List<AbstractStateModel> states) {
        states.add(new EndStateModel(CasWebflowConstants.STATE_ID_SUCCESS));
        states.add(new EndStateModel(CasWebflowConstants.STATE_ID_MFA_DENIED));
        states.add(new EndStateModel(CasWebflowConstants.STATE_ID_MFA_UNAVAILABLE));
    }
This is {@link DuoSecurityMultifactorWebflowConfigurer}.

@author Misagh Moayyed
@since 5.0.0
support/cas-server-support-duo-core/src/main/java/org/apereo/cas/adaptors/duo/web/flow/DuoSecurityMultifactorWebflowConfigurer.java