public BookOutlineStorage::getBooks()

The node storage. Type:

protected BookAdminEditForm::bookAdminTableTree(array $tree

public BookAdminEditForm::getFormId()

public BookManager::bookTreeCollectNodeLinks(&$tree, &$node_links)

The node view builder. Type:

Defines the book navigation cache context service. Cache context ID: 'route.book_navigation'. This allows for

public BookRemoveForm::getDescription()

public BookRemoveForm::getCancelUrl()

public BookManagerInterface::getAllBooks()