[keycloak-user] Plugin: Get a list of users by custom attribute value

Hello, I'm using keycloak:latest with postgres background in docker. I need to get list of users, but I'm unable to use groups. The user query in keycloak returns a user in 300ms, which is really slow for me. As this link suggests http://lists.jboss.org/pipermail/keycloak-user/2017-February/009548.html I'm trying to create a plugin, but I have difficulties. I need UserPermissionEvaluator to auth: - UserPermissionEvaluator userPermissionEvaluator = auth.users(); When I use the following imports in my plugin: - import org.keycloak.services.resources.admin.permissions.UserPermissionEvaluator; I'm gettin this exception: - java.lang.NoClassDefFoundError: org/keycloak/services/resources/admin/permissions/UserPermissionEvaluator You can access my code on github ( https://github.com/zingz0r/Keycloak.Plugin). Could you please help me to solve this issue? Thanks in advance; Tamás Tóth