$event['uri'] = defaults($arr, 'uri' , Item::newURI($event['uid'], $event['guid']));
$event['type'] = defaults($arr, 'type' , 'event');
$event['summary'] = defaults($arr, 'summary' , '');
$event['uri'] = defaults($arr, 'uri' , Item::newURI($event['uid'], $event['guid']));
$event['type'] = defaults($arr, 'type' , 'event');
$event['summary'] = defaults($arr, 'summary' , '');