BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//collective//icalendar//6.3.2.dev310//EN
BEGIN:VEVENT
UID:19960401-080045-4000F192713.ics
DTSTAMP:19960817T083000Z
SUMMARY:Examples from RFC 9253
RELATED-TO:jsmith.part7.19960817T083000.xyzMail@example.com
RELATED-TO;VALUE=UID:19960401-080045-4000F192713-0052@example.com
RELATED-TO;VALUE=URI;RELTYPE=STARTTOFINISH:
 https://example.com/caldav/user/jb/cal/
 19960401-080045-4000F192713.ics
END:VEVENT
END:VCALENDAR