anchor.diff:           status/1,
            callback/3]).
   
  +-export([data_size/1]).
  +
   %% "Testing" backend API
   -export([reset/0]).
   
  
positive.code:              {time_table_status, TimeStatus}]
      end.
  
  %% @doc Register an asynchronous callback
  -spec callback(reference(), any(), state()) -> {ok, state()}.
  callback(_Ref, _Msg, State) ->
  
negative.code: -endif.
  
  -define(API_VERSION, 1).
  -define(CAPABILITIES, [async_fold, indexes, size]).
  
  %% Macros for working with indexes
  -define(DELETE_PTN(B,K), {{B,'_','_',K},'_'}).
  