@Override
    public AbstractMultifactorAuthenticationProvider getMultifactorAuthenticationProvider() {
        return new DefaultDuoSecurityMultifactorAuthenticationProvider(
            new DuoSecurityMultifactorAuthenticationRegistrationProperties()
                .setRegistrationUrl("https://www.example.org"),
            mock(DuoSecurityAuthenticationService.class));
    }
This is {@link DefaultDuoSecurityMultifactorAuthenticationProviderTests}.

@author Misagh Moayyed
@since 6.1.0
support/cas-server-support-duo-core-mfa/src/test/java/org/apereo/cas/adaptors/duo/DefaultDuoSecurityMultifactorAuthenticationProviderTests.java