Neos\ContentRepository\Domain\Model\Node::moveVariantOrChild PHP Method

    protected function moveVariantOrChild($aggregateOriginalPath, $aggregateDestinationPath, NodeInterface $nodeToMove = null)
    {
        if ($nodeToMove === null) {
            return null;
        }
        $variantOriginalPath = $nodeToMove->getPath();
        $relativePathSegment = NodePaths::getRelativePathBetween($aggregateOriginalPath, $variantOriginalPath);
        $variantDestinationPath = NodePaths::addNodePathSegment($aggregateDestinationPath, $relativePathSegment);
        $this->moveNodeToDestinationPath($nodeToMove, $variantDestinationPath);
        return [$nodeToMove, $variantOriginalPath, $nodeToMove->getPath()];
    }