Major Description
The authentication type can be configured in the Fediz plugin statically or a callback handler can be implemented and configured.
This is a default implementation of a callback handler to pass the wauth parameter in the SignIn request to the IDP in the initial request to the application:
https://localhost:8443/fedizhelloworld/secure/fedservlet?wauth=xyz
See here for a list of standard authentication types:
http://docs.oasis-open.org/wsfed/federation/v1.2/os/ws-federation-1.2-spec-os.html#_Toc223174997