BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Nextcloud Tasks 0.11.3
BEGIN:VTODO
CREATED:20181119T183919
DTSTAMP:20190918T095816
LAST-MODIFIED:20190918T095816
UID:pwen4kz18g
SUMMARY:Test 1
RRULE:FREQ=WEEKLY;INTERVAL=2
END:VTODO
END:VCALENDAR