anchor.diff:  proplist_iterate_map({_Size, Proplist}) ->
   	lists:map(fun({_Key, Value}) -> null(Value) end, Proplist).
   
  +proplist_iterate_foldl({_Size, Proplist}) ->
  +	lists:foldl(fun({_Key, Value}, _) -> null(Value) end, ok, Proplist).
  +
   proplist_keystore({Size, Proplist}) ->
   	Key = list_to_binary(integer_to_list(random:uniform(Size))),
   	lists:keystore(Key, 1, Proplist, {Key, <<"DUMMY VALUE">>}).
  
positive.code: pdict_iterate_map({_Size}) ->
  	lists:map(fun({{ourshit, _Key}, Value}) -> null(Value); (_) -> nothing end, get()).
  
  pdict_store({Size}) ->
  	put({ourshit, list_to_binary(integer_to_list(random:uniform(Size)))}, <<"DUMMY VALUE">>).
  
  
negative.code: 			{create, fun ?MODULE:null/0, fun(ok) -> dict:new() end},
  			{fetch, SetupFunc, fun ?MODULE:dict_fetch/1},
  			{iterate_map, SetupFunc, fun ?MODULE:dict_iterate_map/1},
  			{iterate_fold, SetupFunc, fun ?MODULE:dict_iterate_fold/1},
  			{to_list, SetupFunc, fun ?MODULE:dict_to_list/1},
  			{store, SetupFunc, fun ?MODULE:dict_store/1},
  			{erase, SetupFunc, fun ?MODULE:dict_erase/1}
  		],
  