Indicates that the provider will provide user data along with authentication,
allowing the user's authentication login name to differ from the user's
enterprise integration ID (EID).
This interface is tailored for institutions which pick up other provided user
data as a side-effect of authentication. Authentication-only services would be
better described through an AuthenticationEidProvider interface.
This interface only works where you are having users enter their username and
password into the Sakai login box. If you have authentication performed by the
servlet container or web server then you need to use