Stores flattened book trees. Type:

public BookAdminEditForm::validateForm(array &$form

public BookOutline::__construct(BookManagerInterface $book_manager)

Controller routines for book routes. Hierarchy class \Drupal\Core\Controller\

Displays the book outline form. Hierarchy class \Drupal\Core\Form\

The renderer. Type:

protected BookManager::buildItems(array $tree)

public BookOutlineStorage::loadBookChildren($pid)

public BookOutlineStorage::__construct(Connection $connection)

The book manager. Type: