public MenuActiveTrailInterface::getActiveLink($menu_name = NULL)
Fetches a menu link which matches the route name, parameters and menu name.
Parameters
string|null $menu_name: (optional) The menu within which to find the active link. If omitted, all menus will be searched.
Return value
\Drupal\Core\Menu\MenuLinkInterface|null The menu link for the given route name, parameters and menu, or NULL if there is no matching menu link or the current user cannot access the current page (i.e. we have