hook_link_alter(&$variables) Alter the parameters for links. Parameters

public MenuTreeStorage::load($id) Loads

public MenuLinkBase::isExpanded() Returns

public LocalActionManager::getTitle(LocalActionInterface $loc

public ContextualLinkManagerInterface

A controller resolver object. Type: \Symfony\Component\HttpKernel\Controller\ControllerResolverInterface

The module data from

protected ContextualLinkManager::getDiscovery()

public MenuParentFormSelector::parentSelectElement($menu_parent

protected MenuTreeStorage::findParent($link, $original)