The node view builder. Type:

public BookRemoveForm::getCancelUrl()

book_form_node_confirm_form_alter(&$form, FormStateInterface $form_state) Implements

public BookController::__construct(BookManagerInterface

protected BookManager::flatBookTree(array $tree, array &$flat)

public BookAdminEditForm::getFormId()

The current user account. Type:

The node storage. Type:

public BookOutlineStorage::getBookMenuTree($bid, $parameters

protected BookExport::exportTraverse(array $tree, $callable)