BookUninstallValidator::$bookOutlineStorage

The book outline storage.

Type: \Drupal\book\BookOutlineStorageInterface

File

core/modules/book/src/BookUninstallValidator.php, line 23

Class

BookUninstallValidator

Prevents book module from being uninstalled whilst any book nodes exist or there are any book outline stored.

Namespace

Drupal\book

Code

protected $bookOutlineStorage;