Symfony\Component\Config\Definition\Dumper\YamlReferenceDumper::getPrototypeChildren PHP Method

    private function getPrototypeChildren(PrototypedArrayNode $node)
    {
        $prototype = $node->getPrototype();
        $key = $node->getKeyAttribute();
        // Do not expand prototype if it isn't an array node nor uses attribute as key
        if (!$key && !$prototype instanceof ArrayNode) {
            return $node->getChildren();
        }
        if ($prototype instanceof ArrayNode) {
            $keyNode = new ArrayNode($key, $node);
            $children = $prototype->getChildren();
            if ($prototype instanceof PrototypedArrayNode && $prototype->getKeyAttribute()) {
                $children = $this->getPrototypeChildren($prototype);
            }
            // add children
            foreach ($children as $childNode) {
                $keyNode->addChild($childNode);
            }
        } else {
            $keyNode = new ScalarNode($key, $node);
        }
        $info = 'Prototype';
        if (null !== $prototype->getInfo()) {
            $info .= ': ' . $prototype->getInfo();
        }
        $keyNode->setInfo($info);
        return array($key => $keyNode);
    }