OAuth SAML Single Sign-On SSO.ID product
Please first go through what I'm looking for here.
If you are looking for the OAuth2 provider specification, it's described here
If you are looking for the SAML client, it's described here
What am I looking for? The key question is: Given an existing application that uses OAuth2 as the identity
Provider, what do I need to do to enable a SAML-based client app to "use" the OAuth2 service?