@Override
    default int getOrder() {
        return 0;
    }
Gets include-only attributes.
If specified, consent should only be applied to the listed attributes
and not everything the attribute release policy may indicate.

@return the include-only attributes. If the return collection is null or empty,
attribute release policy is consulted to determine all of included attributes.
api/cas-server-core-api-services/src/main/java/org/apereo/cas/services/RegisteredServiceConsentPolicy.java