anchor.diff:  all() ->
       [test_has_maps_get_2,
        test_has_mnesia_sync_log_0,
  -     test_has_cerl_sets_0,
  +     test_has_cerl_sets_new_0,
        test_has_maps_take_2,
        test_has_maps_iterator_1,
        test_has_maps_next_1,
  
positive.code: %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  
  % maps:next/1, OTP-21
  has_maps_next_1() ->
      code:ensure_loaded(maps),
  
negative.code: %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  
  % https://github.com/erlang/otp/commit/0149a73d15df1f80cb46752ec3829f48c38dd230
  % erts: Implement maps path iterator
  
  % maps:iterator/1, OTP-21
  has_maps_iterator_1() ->
      code:ensure_loaded(maps),
  