* This class expects the result data to be in a custom format set by self::setResult()
* $result['_feed'] - an instance of one of the $wgFeedClasses classes
* $result['_feeditems'] - an array of FeedItem instances
* This class expects the result data to be in a custom format set by self::setResult()
* $result['_feed'] - an instance of one of the $wgFeedClasses classes
* $result['_feeditems'] - an array of FeedItem instances