protected AuthnRequest getAuthnRequestFor(final SamlRegisteredService service) {
        return getAuthnRequestFor(service.getServiceId());
    }
This is {@link BaseSamlIdPConfigurationTests}.

@author Misagh Moayyed
@since 5.1.0
support/cas-server-support-saml-idp/src/test/java/org/apereo/cas/support/saml/BaseSamlIdPConfigurationTests.java