anchor.diff:  -endif.
   
   -define(API_VERSION, 1).
  --define(CAPABILITIES, [async_fold, indexes]).
  +-define(CAPABILITIES, [async_fold, indexes, size]).
   
   %% Macros for working with indexes
   -define(DELETE_PTN(B,K), {{B,'_','_',K},'_'}).
  
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:          status/1,
           callback/3]).
  
  -export([data_size/1]).
  
  %% "Testing" backend API
  -export([reset/0]).
  
  