public void Handle(ConferenceEditModel form)
{
Conference conf = _repository.GetById(form.Id);
conf.ChangeName(form.Name);
foreach (var attendeeEditModel in GetAttendeeForms(form))
{
Attendee attendee = conf.GetAttendee(attendeeEditModel.Id);
attendee.ChangeName(attendeeEditModel.FirstName,
attendeeEditModel.LastName);
attendee.Email = attendeeEditModel.Email;
}
}