anchor.diff:  -export([start/1, stop/0]).
   
   -export([
  -        find/1, 
  -        find/2, 
  -        find/3, 
  +        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, 
  +        counter/1,
  +        incr/1,
  +        incr/2,
  +        delete/1,
  +        save_record/1,
           push/0,
           pop/0,
           depth/0,
  
positive.code:                 ok ->
                      Result = db_call({delete, Key}),
                      case Result of
                          ok -> 
                              boss_news:deleted(Key, AboutToDelete:attributes()),
                              ok;
                          _ -> 
                              Result
                      end;
                  {error, Reason} ->
  
negative.code:         execute/2,
          transaction/1,
          validate_record/1,
          validate_record_constraints/2,
          validate_record_types/1,
          type/1,
          data_type/2]).
  