Using own CustomRealm, CustomModificationRealm and CustomRealmMapper implementation leads to AbstractMethodError. ----------------------------------------------------------------------------------------------------------------- Key: WFCORE-2413 URL: https://issues.jboss.org/browse/WFCORE-2413 Project: WildFly Core Issue Type: Bug Components: Security Reporter: Hynek Švábek Assignee: Darran Lofthouse Priority: Critical Using own CustomRealm, CustomModifiableRealm and CustomRealmMapper implementation leads to AbstractMethodError. I tried create my own implementation, set up server to use it but I get error message about AbstractMethodError. You can see bellow how to reproduce this problem. I attached jar files with implementation where are located .java files too.