Name of the event fired during route collection to allow new routes. This event is used to add new routes based upon existing routes, giving

Name of the event fired to indicate route building has ended. This event gives modules the opportunity to perform some action after route building

Name of the event fired during route collection to allow changes to routes. This event is used to process new routes before they get saved,

Contains all events thrown in the core routing component. Hierarchy class \Drupal\Core\Routing\