[keycloak-user] Multitenancy for WAR

Hi, first of all, congrats on the beta 1 release! Here's my question: I have a WAR with a REST API that I'm securing with Keycloak. Now I'd like to add multitenancy support. If I understand the concept in keycloak correctly, I would somehow have to have several realms in the keycloak.json and the web.xml of the war, right? However there is just one realm-name attribute in the web.xml and the structure of keycloak.json also looks like it is intended for one realm. Am I missing something? Cheers, Nils