Brotkrueml\FeedGenerator\Collection\Collection class Collection Fully qualified name \Brotkrueml\FeedGenerator\Collection\Collection add ( Brotkrueml\\FeedGenerator\\Contract\\CollectableInterface items) returntype self get ( int index) param int $index the index returntype Brotkrueml\FeedGenerator\Contract\CollectableInterface isEmpty ( ) returntype bool getIterator ( ) returntype Traversable