@Override
    protected String getMultifactorEventId() {
        return YubiKeyMultifactorWebflowConfigurer.MFA_YUBIKEY_EVENT_ID;
    }
This is {@link YubiKeyMultifactorWebflowConfigurerTests}.

@author Misagh Moayyed
@since 6.2.0
support/cas-server-support-yubikey/src/test/java/org/apereo/cas/adaptors/yubikey/YubiKeyMultifactorWebflowConfigurerTests.java