IcsBuilder::formatAttendeeKey

static function formatAttendeeKey($attendee)
{
	$key = 'ATTENDEE';
	$key .= ';CUTYPE=INDIVIDUAL';
	//$key .= ';PARTSTAT=ACCEPTED'; // NEEDS-ACTION
	$key .= ';RSVP=TRUE';
	$key .= ';CN='.$attendee['email'];
	return $key;
}