anchor.diff:  %%%                        and LumaDB feed is used to register storage
   %%% * autorizationHeader - can be tested only when onedataAccessToken is used
   %%% * fileMode           - works only on imported storages
  -%%% * fileMode           - works only on imported storages
  +%%% * dirMode           - works only on imported storages
   %%% * rangeWriteSupport  - there are 3 possible values [none, moddav, sabredav], but only
   %%%                        sabredav option is tested due to webdav storage that onenv creates
   %%%
  
positive.code:             {<<"qosParameters">>, #{<<"key">> => 0.1}, ?ERROR_BAD_VALUE_ATOM(?STORAGE_DATA_KEY(StorageName, <<"qosParameters.key">>))}
          ]
      };
  build_add_webdav_storage_data_spec(MemRef, posix, bad_args) ->
      StorageName = str_utils:rand_hex(10),
      api_test_memory:set(MemRef, storage_name, StorageName),
      #data_spec{
  
negative.code:     api_oneprovider_storages_test_base:args_correctness()
  ) ->
      api_test_runner:data_spec().
  build_add_webdav_storage_data_spec(MemRef, webdav, correct_args) ->
      StorageName = str_utils:rand_hex(10),
      api_test_memory:set(MemRef, storage_name, StorageName),
      #data_spec{
  