anchor.diff:  %%--------------------------------------------------------------------
   -spec handle_service_admin() -> privileges(handle_service_privilege()).
   handle_service_admin() ->
  -    union(handle_service_user(), [
  +    union(handle_service_member(), [
           ?HANDLE_SERVICE_UPDATE,
           ?HANDLE_SERVICE_DELETE,
           ?HANDLE_SERVICE_LIST_HANDLES
  
positive.code: %%--------------------------------------------------------------------
  -spec handle_admin() -> privileges(handle_privilege()).
  handle_admin() ->
      union(handle_user(), [
          ?HANDLE_UPDATE,
          ?HANDLE_DELETE
      ]).
  
negative.code: %%--------------------------------------------------------------------
  %% @doc A privilege level of a Cluster user.
  %%--------------------------------------------------------------------
  -spec cluster_member() -> privileges(cluster_privilege()).
  cluster_member() ->
      from_list([
          ?CLUSTER_VIEW
      ]).
  