anchor.diff:           ring_trans/2,
            run_fixups/3,
            set_cluster_name/1,
  -         stop/0]).
  +         stop/0,
  +         is_stable_ring/0]).
   
   -export([init/1, handle_call/3, handle_cast/2, handle_info/2,
           terminate/2, code_change/3]).
  
positive.code:     State2 = set_ring(Ring, State),
      State2.
  
  %% ===================================================================
  %% Unit tests
  %% ===================================================================
  
negative.code: handle_call({set_cluster_name, Name}, _From, State=#state{raw_ring=Ring}) ->
      NewRing = riak_core_ring:set_cluster_name(Ring, Name),
      State2 = prune_write_notify_ring(NewRing, State),
      {reply, ok, State2};
  handle_call(is_stable_ring, _From, State) ->
      {IsStable,_DeltaMS} = is_stable_ring(State),
      {reply, IsStable, State}.
  
  handle_cast(stop, State) ->
      {stop,normal,State};
  