BEGIN:VCALENDAR METHOD:PUBLISH VERSION:2.0 BEGIN:VEVENT SUMMARY:"Geschichte und Erinnerung - Das Bundesarchiv" CREATED:20220627T220000Z DTSTART:20220612T220000Z DTEND:20220915T220000Z LOCATION:Koblenz END:VEVENT END:VCALENDAR response.setHeader("Content-Disposition","attachment;filename=event.ics");