anchor.diff:      Stats;
   set([{K, V} | L], Stats) ->
       NS = case K of
  -             session_id -> Stats#rr_recon_stats{ session_id = V };
  -             tree_size -> Stats#rr_recon_stats{ tree_size = V };
  -             tree_compareLeft -> Stats#rr_recon_stats{ tree_compareLeft = V };
  -             tree_nodesCompared -> Stats#rr_recon_stats { tree_nodesCompared = V };
  -             tree_leafsSynced -> Stats#rr_recon_stats{ tree_leafsSynced = V };
  -             tree_compareSkipped -> Stats#rr_recon_stats{ tree_compareSkipped = V };
  -             error_count -> Stats#rr_recon_stats{ error_count = V };
  -             build_time -> Stats#rr_recon_stats{ build_time = V };
  -             recon_time -> Stats#rr_recon_stats{ recon_time = V };             
  -             resolve_started -> Stats#rr_recon_stats{ resolve_started = V };
  -             status -> Stats#rr_recon_stats{ status = V }
  +             session_id          -> Stats#rr_recon_stats{session_id = V};
  +             tree_size           -> Stats#rr_recon_stats{tree_size = V};
  +             tree_compareLeft    -> Stats#rr_recon_stats{tree_compareLeft = V};
  +             tree_nodesCompared  -> Stats#rr_recon_stats{tree_nodesCompared = V};
  +             tree_leafsSynced    -> Stats#rr_recon_stats{tree_leafsSynced = V};
  +             tree_compareSkipped -> Stats#rr_recon_stats{tree_compareSkipped = V};
  +             error_count         -> Stats#rr_recon_stats{error_count = V};
  +             build_time          -> Stats#rr_recon_stats{build_time = V};
  +             recon_time          -> Stats#rr_recon_stats{recon_time = V};
  +             resolve_started     -> Stats#rr_recon_stats{resolve_started = V};
  +             status              -> Stats#rr_recon_stats{status = V}
            end,
       set(L, NS).
   
  
positive.code:     Stats;
  inc([{K, V} | L], Stats) ->
      NS = case K of
               tree_size -> Stats#rr_recon_stats{ tree_size = V };
               tree_compareLeft -> 
                   Stats#rr_recon_stats{ tree_compareLeft = 
                                             V + Stats#rr_recon_stats.tree_compareLeft };
               tree_nodesCompared ->
                   Stats#rr_recon_stats { tree_nodesCompared =
                                              V + Stats#rr_recon_stats.tree_nodesCompared };
               tree_leafsSynced ->
                   Stats#rr_recon_stats{ tree_leafsSynced = 
                                             V + Stats#rr_recon_stats.tree_leafsSynced };
               tree_compareSkipped ->
                   Stats#rr_recon_stats{ tree_compareSkipped = 
                                             V + Stats#rr_recon_stats.tree_compareSkipped };
               error_count ->
                   Stats#rr_recon_stats{ error_count = V + Stats#rr_recon_stats.error_count };
               build_time ->
                   Stats#rr_recon_stats{ build_time = V + Stats#rr_recon_stats.build_time };
               recon_time ->
                   Stats#rr_recon_stats{ recon_time = V + Stats#rr_recon_stats.recon_time };
               resolve_started ->
                   Stats#rr_recon_stats{ resolve_started = V + Stats#rr_recon_stats.resolve_started }
           end,
      inc(L, NS).
  
  
negative.code:          (recon_time, stats())         -> non_neg_integer();
           (resolve_started, stats())    -> non_neg_integer();
           (status, stats())             -> status().
  get(session_id         , #rr_recon_stats{session_id          = X}) -> X;
  get(tree_size          , #rr_recon_stats{tree_size           = X}) -> X;
  get(tree_compareLeft   , #rr_recon_stats{tree_compareLeft    = X}) -> X;
  get(tree_nodesCompared , #rr_recon_stats{tree_nodesCompared  = X}) -> X;
  get(tree_leafsSynced   , #rr_recon_stats{tree_leafsSynced    = X}) -> X;
  get(tree_compareSkipped, #rr_recon_stats{tree_compareSkipped = X}) -> X;
  get(error_count        , #rr_recon_stats{error_count         = X}) -> X;
  get(build_time         , #rr_recon_stats{build_time          = X}) -> X;
  get(recon_time         , #rr_recon_stats{recon_time          = X}) -> X;
  get(resolve_started    , #rr_recon_stats{resolve_started     = X}) -> X;
  get(status             , #rr_recon_stats{status              = X}) -> X.
  
  -spec merge(stats(), stats()) -> stats().
  merge(A, #rr_recon_stats{ tree_size = TS,
  