The menu link tree storage. Type:

public MenuTreeStorageInterface::getExpanded($menu_name

public LocalTaskInterface::getOptions(RouteMatchInterface $ro

public LocalTaskManagerInterface::getTitle(LocalTaskInterface

The object that discovers plugins managed by this manager. Type: \Drupal\Component\Plugin\Discovery\DiscoveryInterface

public DefaultMenuLinkTreeManipulators::flatten(array

public MenuActiveTrail::getActiveTrailIds($menu_name)

public MenuLinkTree::maxDepth() Returns

protected LocalTaskManager::isRouteActive($current_route_name, $route_name

protected MenuTreeStorage::doFindChildrenRelativeDepth(array $original)