anchor.diff:                               primary=T#rpbbucketkeypreflistitem.primary}
                 || T <- Preflist],
       {reply, {ok, Result}, State};
  +
  +process_response(#request{msg = #rpbcoveragereq{}},
  +                 #rpbcoverageresp{entries=E}, State) ->
  +    {reply, {ok, E}, State};
   
   process_response(Request, Reply, State) ->
       %% Unknown request/response combo
  
positive.code:     Req = #rpbgetbucketkeypreflistreq{type = T, bucket = B, key = Key},
      call_infinity(Pid, {req, Req, Timeout}).
  
  
  %% ====================================================================
  %% gen_server callbacks
  
negative.code:          cs_bucket_fold/3,
           default_timeout/1,
           tunnel/4,
           get_preflist/3, get_preflist/4,
           get_coverage/2, get_coverage/3]).
  
  %% Counter API
  -export([counter_incr/4, counter_val/3]).
  