anchor.diff:          push/0,
           pop/0,
   	create_table/2,
  +	table_exists/1,
           depth/0,
           dump/0,
           execute/1,
  
positive.code:             {reply, Reply, _} = boss_db_controller:handle_call(Msg, self(), State),
              Reply
      end.
  
  %% @spec find(Id::string()) -> BossRecord | {error, Reason}
  %% @doc Find a BossRecord with the specified `Id'.
  
negative.code: -export([start/1, stop/0]).
  
  -export([
  	 migrate/1,
          find/1, 
          find/2, 
          find/3, 
  