anchor.diff:                  ok ->
                       Result = db_call({delete, Key}),
                       case Result of
  -                        ok -> 
  +                        ok ->
                               boss_news:deleted(Key, AboutToDelete:attributes()),
                               ok;
  -                        _ -> 
  +                        _ ->
                               Result
                       end;
                   {error, Reason} ->
  
positive.code: -export([start/1, stop/0]).
  
  -export([
          find/1, 
          find/2, 
          find/3, 
          find_first/2,
          find_first/3,
          find_last/2,
          find_last/3,
          count/1,
          count/2,
          counter/1, 
          incr/1, 
          incr/2, 
          delete/1, 
          save_record/1, 
          push/0,
          pop/0,
          depth/0,
  
negative.code:                     if
                          GreatSuccess ->
                              Acc;
                          true ->
                              [lists:concat(["Invalid data type for ", Attr])|Acc]
                      end
                    end
  