public BookManager::loadBookLinks($nids, $translate = TRUE)

protected BookManager::bookTreeBuild($bid, array $parameters = array())

public BookExport::bookExportHtml(NodeInterface $node)

Default theme implementation for printed version of book outline. Available variables: title:

The book manager. Type:

public BookManager::saveBookLink(array $link, $new)

BookManager service. Type:

Config Factory Service Object. Type:

book_node_builder($entity_type, NodeInterface $entity, &$form, FormStateInterface $form_state) Entity form

Defines the maximum supported depth of the book tree. File core/modules/book/src/BookManager.php, line