function BookNavigationBlock::getCacheMaxAge

@todo Make cacheable in https://www.drupal.org/node/2483181

Overrides ContextAwarePluginTrait::getCacheMaxAge

File

core/modules/book/src/Plugin/Block/BookNavigationBlock.php, line 195

Class

BookNavigationBlock

Provides a 'Book navigation' block.

Namespace

Code

public function getCacheMaxAge() {
    return 0;
}