anchor.diff:  %%--------------------------------------------------------------------
   %%
   %%--------------------------------------------------------------------
  -handle_sync_event({augment_data, _NewData}, _From, StateName, State) ->
  -    Reply = ok,
  -    {reply, Reply, StateName, State};
   handle_sync_event(_Event, _From, StateName, State) ->
       Reply = ok,
       {reply, Reply, StateName, State}.
  
positive.code:     {next_state, not_full, State}.
  
  all_received({block_written, BlockID}, State=#state{unacked_writes=UnackedWrites}) ->
      NewUnackedSet = ordsets:del_element(BlockID, UnackedWrites),
      case ordsets:size(NewUnackedSet) of
          0 ->
  
negative.code:     end.
  
  all_received(finalize, _From, State) ->
      %% 1. state the From pid into our
      %%    state so that we know to reply
      %%    later with the finished manifest
      Reply = ok,
      {reply, Reply, all_received, State}.
  
  done(finalize, _From, State) ->
      %% 1. reply immediately
      %%    with the finished manifest
      Reply = ok,
      {reply, Reply, stop, State}.
  
  