Problem with deprecated class methods in EP 6.0

Inside EP6.0-PDK-Usermanagement documentation (JavaDoc), I found the interface com.sap.security.api.umap.IUserMappingData for enriching HTTPConnections with user information.

But how to get instances based on this interface? I mean which methods from PortalRequest will I need to get there?

Can you give me an hint on how to proceed to get the user ticket information to a HTTP connection when just having a naked portal development project?

Thank you

Sigi