anchor.diff:                                          ?LOGGING_MASTER).
   
   %% @doc Sends an `append' asyncrhonous command to the Logs in `Preflist'
  --spec asyn_append(preflist(), log_id(), op()) -> term().
   asyn_append(Preflist, Log, Payload) ->
       lager:info("Append triggered with preference list: ~p", [Preflist]),
       riak_core_vnode_master:command(Preflist,
  
positive.code:          read/2,
           asyn_append/3,
           append/3,
           append_list/3,
           asyn_read_from/3,
           read_from/3]).
  
  
negative.code:             {reply, {error, Reason}, State}
      end;
  
  %% @doc Append command: Appends a new op to the Log of Key
  %%      Input:  LogId: Indetifies which log the operation has to be
  %%              appended to.
  