anchor.diff:              {ok, MembershipList, OutgoingMessages, State0};
           false ->
               %% Merge, persist, reforward to peers.
  -            Membership = partisan_membership_set:merge(Membership0, Membership1),
  -            State = State0#full_v1{membership = Membership},
  +            M = partisan_membership_set:merge(M0, M1),
  +            State = State0#full_v1{membership = M},
               MembershipList = membership_list(State),
               OutgoingMessages = gossip_messages(State),
               persist_state(State),
  
positive.code:             end
      end.
  
  %% @private
  data_root() ->
      case application:get_env(partisan, partisan_data_dir) of
  
negative.code:         undefined ->
              undefined
      end.
  
  
  %% @private
  new_state(Actor) ->
  