[keycloak-user] Stateful per-realm objects

Hi, A new login protocol endpoint instance is created each time per- request (o.k.protocol.LoginProtocolFactory::createProtocolEndpoint). I need all the instances to have access to a shared, per-realm stateful object. (Background: I'm implementing OpenID 2.0 for Keycloak using openid4java library. There, the central concept is ServerManager, a per-endpoint singleton that stores cryptographic associations and other shared data.) Just wondering if there's already similar mechanism in Keycloak. It shouldn't be that hard to implement a singleton registry, but it'd prefer not to reinvent the wheel. Thanks! Dmitry