drupal/core/modules/menu_ui/menu_ui.links.task.yml

entity.menu.edit_form:
  title: 'Edit menu'
  route_name: entity.menu.edit_form
  base_route: entity.menu.edit_form

menu_ui.overview_page:
  title: 'List'
  route_name: menu_ui.overview_page
  base_route: menu_ui.overview_page