anchor.diff:      Result = case redis_backend:sadd(Bucket, Key, "_", Item, State#state.redis_state) of
                    {ok, _} ->
                        ok;
  -                 {error, _, _} ->
  -                     error
  +                 Error ->
  +                     Error
                end,
       {reply, {RequestId, Result}, State};
   
  
positive.code:     Result = case redis_backend:srem(Bucket, Key, "_", Item, State#state.redis_state) of
                   {ok, _} ->
                       ok;
                   {error, _, _} ->
                       error
               end,
      {reply, {RequestId, Result}, State};
  
  
negative.code:     Result = case redis_backend:transaction(CommandList, State#state.redis_state) of
                 {ok, _} ->
                     ok;
                 Error ->
                     Error
               end,
      {reply, {RequestId, Result}, State};
  
  