@Override
    public String getId() {
        return StringUtils.defaultIfBlank(super.getId(), WebAuthnMultifactorAuthenticationProperties.DEFAULT_IDENTIFIER);
    }
This is {@link WebAuthnMultifactorAuthenticationProvider}.

@author Misagh Moayyed
@since 6.3.0
support/cas-server-support-webauthn-core/src/main/java/org/apereo/cas/webauthn/WebAuthnMultifactorAuthenticationProvider.java