Function: gnus-icalendar-event-cancel-p
gnus-icalendar-event-cancel-p is a byte-compiled function without a
source file.
Signature
(gnus-icalendar-event-cancel-p OBJ)
Documentation
Return non-nil if OBJ is an object of type gnus-icalendar-event-cancel(var)/gnus-icalendar-event-cancel(fun).