does the spring security saml 1.0.0.RC2 not support WAYF/SAMLDS

i used shibboleth ds,

https://ds01/discoveryService/metadata.xml

the metadata.xml contain one idp and many sp EntityDescriptor.

there's not place to configure the ds service
https://ds01/discoveryService/DS

anybody can confirm or how to use the shibboleth ds, not the default ds...

thanks.