protected override void When()
        {
            base.When();

            _title = "New Title";

            _event = New.Event()
                .TitleChangedOn(_expense.Id)
                .To(_title)
                .Publish();
        }
 public TitleChangedOnExpenseBuilder(Guid id)
 {
     _event = new TitleChangedOnExpenseEvent(id);
 }