anchor.diff:      StorageId = initializer:get_storage_id(W),
       TTL = 0,
       SDHandle = get_sd_handle(W, ?SPACE_ID, SessionId, ?UUID, StorageId, ?STORAGE_FILE_ID),
  -    FetchTokenCallsNum0 = ?getFetchTokenCalls(W, [SessionId, ?USER, ?IDP]),
  +    FetchTokenCallsNum0 = ?getFetchTokenCalls(W, [SessionId, ?USER1, ?IDP]),
       mock_fetch_token(W, ?IDP_ACCESS_TOKEN,  TTL),
   
       % setxattr should return EKEYEXPIRED due to TTL=0
  
positive.code:     Case =:= root_operation_fails_with_expired_token_on_insecure_storage;
      Case =:= user_operation_succeeds_with_refreshed_token_on_insecure_storage;
      Case =:= root_operation_succeeds_with_refreshed_token_on_insecure_storage
      ->
      [W | _] = ?config(op_worker_nodes, Config),
      enable_webdav_test_mode_insecure_storage(W, initializer:get_storage_id(W)),
      test_utils:mock_new(W, [helpers, helpers_fallback, helpers_reload], [passthrough]),
  
negative.code:     % ensure that setxattr was repeated
      ?assertSetxattrCalls(W, ['_', '_', '_', '_', '_', '_'], 3),
      % ensure that token was acquired in admin_ctx
      ?assertEqual(FetchTokenCallsNum0 + 2, ?getFetchTokenCalls(W, [SessionId, ?USER1, ?IDP])).
  
  
  root_operation_succeeds_with_refreshed_token_on_secure_storage(Config) ->
  