anchor.diff:  -define(FILE_UUID, <<"file_uuid">>).
   -define(SPACE_ID, <<"spaceid">>).
   -define(FILE_GUID, file_id:pack_guid(?FILE_UUID, ?SPACE_ID)).
  +-define(STORAGE_ID1, <<"storageid1">>).
  +-define(STORAGE_ID2, <<"storageid2">>).
   
   %%%===================================================================
   %%% Test functions
  
positive.code: -include_lib("ctool/include/test/performance.hrl").
  
  %% export for ct
  -export([all/0, init_per_suite/1, init_per_testcase/2, end_per_testcase/2]).
  
  %% tests
  -export([
  
negative.code: file_location_changed_event() ->
      #file_location_changed_event{file_location = #file_location{uuid = ?FILE_UUID, space_id = ?SPACE_ID}}.
  
  %% @private
  -spec helper_params_changed_event(storage:id()) -> #helper_params_changed_event{}.
  helper_params_changed_event(StorageId) ->
      #helper_params_changed_event{storage_id = StorageId}.
  
  %%--------------------------------------------------------------------
  %% @private
  %% @doc
  