private void OnCreateUserThreaded(object state)
        {
            object[] objs = state as object[];

            IEditSchemaProvider provider = objs[0] as IEditSchemaProvider;
            UserSchema          user     = objs[1] as UserSchema;
            BaseNode            node     = objs[2] as BaseNode;

            provider.CreateUser(user);
            node.Refresh();
        }