anchor.diff:                    ],));
               })
               ..timeout(new Duration(seconds: 10))
  -            ..catchError(() =>
  -                setState(() {
  -                  _pop();
  -                  _isRefreshingNewFriend = false;
  -                }));
  +            ..catchError(() {
  +              _pop();
  +              setState(() => _isRefreshingNewFriend = false);
  +            });
           },),));
       _friendsView.add(const ListTile());
       _friends.child = new ListView(
  
positive.code:     SharedPreferences.getInstance().then((sp) {
        _performChangeUser(sp.getString(DatabaseKeys.USER) ??
            CodeWarsAPI.getErrorWithReason("not set"));
        _performChangeFriends(sp.getStringSet(DatabaseKeys.FRIENDS) ?? const[]);
      });
    }
  
  
negative.code:       tabLabel: 'Kata',
        information: "Refresh",);
      _me = new _Page(
        displayWhenEmpty: 'Go there ↗ to specify a user.',
        tabLabel: 'Me',
        icon: Icons.refresh,
        onClick: () {
  