@Override
    default int getOrder() {
        return Ordered.HIGHEST_PRECEDENCE;
    }
This is {@link AuthenticationPreProcessor}. Authentication pre processors
run as the very first step in CAS authentication where credentials are about
to be authenticated.

@author Misagh Moayyed
@since 5.3.0
api/cas-server-core-api-authentication/src/main/java/org/apereo/cas/authentication/AuthenticationPreProcessor.java