The node view builder. Type:
protected BookExport::exportTraverse(array $tree, $callable)
The node storage. Type:
public BookExport::__construct(EntityManagerInterface $entityManager, BookManagerInterface
protected BookExport::bookNodeExport(NodeInterface $node, $children = '')
public BookExport::bookExportHtml(NodeInterface $node)
The book manager. Type:
Provides methods for exporting book to different formats. If you would like to add another format, swap this class in container.