protected property BookManager::$bookTreeFlattened in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/book/src/BookManager.php \Drupal\book\BookManager::bookTreeFlattened

Stores flattened book trees.

Type: array

File

core/modules/book/src/BookManager.php, line 66

Class

BookManager

Defines a book manager.

Namespace

Drupal\book

Code

protected $bookTreeFlattened;