Neos\ContentRepository\Command\NodeCommandControllerPlugin::removeAbstractAndUndefinedNodes PHP Method

    protected function removeAbstractAndUndefinedNodes($workspaceName, $dryRun)
    {
        $this->output->outputLine('Checking for nodes with abstract or undefined node types ...');
        $abstractNodeTypes = array();
        $nonAbstractNodeTypes = array();
        foreach ($this->nodeTypeManager->getNodeTypes() as $nodeType) {
            /** @var NodeType $nodeType */
            if ($nodeType->isAbstract()) {
                $abstractNodeTypes[] = $nodeType->getName();
            } else {
                $nonAbstractNodeTypes[] = $nodeType->getName();
            }
        }
        /** @var \Doctrine\ORM\QueryBuilder $queryBuilder */
        $queryBuilder = $this->entityManager->createQueryBuilder();
        $queryBuilder->select('n')->distinct()->from(NodeData::class, 'n')->where('n.nodeType NOT IN (:excludeNodeTypes)')->setParameter('excludeNodeTypes', $nonAbstractNodeTypes)->andWhere('n.workspace = :workspace')->setParameter('workspace', $workspaceName);
        $nodes = $queryBuilder->getQuery()->getArrayResult();
        $removableNodesCount = count($nodes);
        if ($removableNodesCount === 0) {
            return;
        }
        foreach ($nodes as $node) {
            $name = $node['path'] === '/' ? '' : substr($node['path'], strrpos($node['path'], '/') + 1);
            $type = in_array($node['nodeType'], $abstractNodeTypes) ? 'abstract' : 'undefined';
            $this->output->outputLine('Found node with %s node type named "%s" (%s) in "%s"', array($type, $name, $node['nodeType'], $node['path']));
        }
        $this->output->outputLine();
        if (!$dryRun) {
            $self = $this;
            $this->askBeforeExecutingTask('Abstract or undefined node types found, do you want to remove them?', function () use($self, $nodes, $workspaceName, $removableNodesCount) {
                foreach ($nodes as $node) {
                    $self->removeNode($node['identifier'], $node['dimensionsHash']);
                }
                $self->output->outputLine('Removed %s node%s with abstract or undefined node types.', array($removableNodesCount, $removableNodesCount > 1 ? 's' : ''));
            });
        } else {
            $this->output->outputLine('Found %s node%s with abstract or undefined node types to be removed.', array($removableNodesCount, $removableNodesCount > 1 ? 's' : ''));
        }
        $this->output->outputLine();
    }