Getting error: Undefined name 'csvCodec'. (undefined_identifier )

[Sacchid]

Getting error -
error: Undefined name 'csvCodec'. (undefined_identifier at [easy_csv] example\exa.dart:10)

I implemented decoder example from dart csv package like -

import 'dart:async';
import 'dart:convert';
import 'dart:io';

import 'package:csv/csv.dart';

main() async {
  final input = new File('foo.csv').openRead();
  final fields =
      await input.transform(utf8.decoder).transform(csvCodec.decoder).toList();
}

[close2]

With dart2 csv was no longer able to be a codec.

I forgot to remove the corresponding documentation.