anchor.diff:  
       %% retrieve redundancies
       timer:sleep(100),
  -    attach_1(25),
  -    ok.
  -
  -attach_1(0) ->
  +    attach_1_1(25),
  +    ok.
  +
  +attach_1_1(0) ->
       ok;
  -attach_1(Index) ->
  +attach_1_1(Index) ->
       Key = list_to_binary("key_" ++ integer_to_list(Index)),
       {ok, R1} = leo_redundant_manager_api:get_redundancies_by_key(put, Key),
       {ok, R2} = leo_redundant_manager_api:get_redundancies_by_key(get, Key),
  
positive.code:     inspect0(Hostname),
      ok.
  
  attach_({Hostname}) ->
      ok = prepare(Hostname, gateway),
      {ok, _, _} = leo_redundant_manager_api:create(?VER_CURRENT),
      {ok, _, _} = leo_redundant_manager_api:create(?VER_PREV),
  
negative.code:      {foreach, fun setup/0, fun teardown/1,
        [{with, [T]} || T <- [fun redundant_manager_0_/1,
                              fun redundant_manager_1_/1,
                              fun attach_1_/1,
                              fun attach_2_/1,
                              fun detach_/1,
  
                              fun members_table_/1,
  