public BookManager::getLinkDefaults($nid) Returns

The book manager. Type:

public BookRemoveForm::getQuestion()

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

protected BookOutlineForm::actions(array $form, FormStateInterface

Allows users to create and organize related content in an outline. File core/modules/book/book.module

public BookOutlineStorageInterface::del

public BookOutlineStorage::__construct(Connection $connection)

public BookManagerInterface::addFormElements(array $form

protected BookManager::buildItems(array $tree)