def expanded_items(calendar_view_options)
      calendar_view = CalendarView.new(calendar_view_options)
      items = Item.find_calendar_view_set_by_folder_id(id, calendar_view)

      items.each { |item| item.parent_folder = self }
    end
def expanded_items(calendar_view_options)
      calendar_view = CalendarView.new(calendar_view_options)
      items = Item.find_calendar_view_set_by_folder_id(id, calendar_view)

      items.each { |item| item.parent_folder = self }
    end
Return items (also recurring calendar items) based on
 provided CalendarView options