Jackalope\ObjectManager::filterChildNodeNamesByType PHP Метод

    public function filterChildNodeNamesByType(NodeInterface $node, $nameFilter, $typeFilter)
    {
        if ($this->transport instanceof NodeTypeFilterInterface) {
            return $this->transport->filterChildNodeNamesByType($node->getPath(), $node->getNodeNames($nameFilter), $typeFilter);
        }
        // fallback: get the actual nodes and let that filter. this is expensive.
        return new ArrayIterator(array_keys($node->getNodes($nameFilter, $typeFilter)->getArrayCopy()));
    }