anchor.diff:  list_to_rset(K, [H | T], Acc) ->
     M = riakc_map:update(
       {to_bin(K), set},
  -    fun(S) -> riakc_set:add_element(to_bin(H), S) end,
  +    fun(S) -> riakc_set:add_element(to_bin2(H), S) end,
       Acc),
     list_to_rset(K, T, M).
   
  
positive.code:     true ->
        riakc_map:update(
          {to_bin(K), register},
          fun(R) -> riakc_register:set(to_bin(V), R) end,
          RMap);
      false ->
        list_to_rset(K, V, RMap)
  
negative.code: rmap_update({K, V}, RMap) ->
    riakc_map:update(
      {to_bin(K), register},
      fun(R) -> riakc_register:set(to_bin2(V), R) end,
      RMap).
  
  %% @private
  