keep future example

List<Future<String>> futuresList = new List<Future<String>>();
    List<String> blogsList = ["1", "2", "3", "4", "5", "6"];
    for (final blog in blogsList) {
      if (blog == "2") {
        futuresList.add(Future<String>.error('error').catchError((e) => e));
      } else {
        futuresList.add(Future.value(blog));
      }
    }
    try {
      List<String> responses = await Future.wait(futuresList);
      print(responses);
    } catch (e) {
      print("Futures list error: " + e.toString());
    }