/**
* Removes all auto created child nodes that existed in the previous nodeType.
*
* @param NodeInterface $node
* @param NodeType $oldNodeType
* @return void
*/
public function cleanUpAutoCreatedChildNodes(NodeInterface $node, NodeType $oldNodeType)
{
$newNodeType = $node->getNodeType();
$autoCreatedChildNodesForNewNodeType = $newNodeType->getAutoCreatedChildNodes();
$autoCreatedChildNodesForOldNodeType = $oldNodeType->getAutoCreatedChildNodes();
$removedChildNodesFromOldNodeType = array_diff(array_keys($autoCreatedChildNodesForOldNodeType), array_keys($autoCreatedChildNodesForNewNodeType));
/** @var NodeInterface $childNode */
foreach ($node->getChildNodes() as $childNode) {
if (in_array($childNode->getName(), $removedChildNodesFromOldNodeType)) {
$childNode->remove();
}
}
}
