Как я могу получить доступ к _jobStartDate и _jobStartTime внутри блока foreach

Question

Future<int> canWorkerApplyForTheJob(String workerEmail, Job j) async {
  int _minutes = 0;
  final _jobStartDate =
      '${DateTime.parse(j.jobStartDate).toString().split(' ')[0]} 00:00:00.000';
  final _jobStartTime =
      '${DateTime.parse(j.jobStartDate).toString().split(' ')[0]} ${j.jobStartTime.toString().split(' ')[1]}';
  QuerySnapshot _myDoc = await jobsCollection
      .where("jobStartDate", isEqualTo: _jobStartDate)
      .where("workers", arrayContainsAny: [workerEmail]).getDocuments();
  List<DocumentSnapshot> _myDocCount = _myDoc.documents;
  _myDocCount.forEach((key) {
    final job = key.data;
    final jobEndDate = job['jobEndDate'];
    final jobEndTime = job['jobEndTime'];
    DateTime newJobStartTime = DateTime.parse(
        '${j.jobStartDate.split(' ')[0]} ${j.jobStartTime.split(' ')[1]}');
    DateTime existingJobStartTime = DateTime.parse(
        '${jobEndDate.split(' ')[0]} ${jobEndTime.split(' ')[1]}');
    final inMinutes =
        newJobStartTime.difference(existingJobStartTime).inMinutes;
    if (inMinutes < 480) {
      _minutes += 1;
    }
  });
  return _minutes;
}