snprintf(annotated_attendee_string, sizeof annotated_attendee_string,
"MAILTO:%s (%s)", attendee_string, annotation);
icalproperty_set_attendee(attendee, annotated_attendee_string);
snprintf(annotated_attendee_string, sizeof annotated_attendee_string,
"MAILTO:%s (%s)", attendee_string, annotation);
icalproperty_set_attendee(attendee, annotated_attendee_string);