metatag-8.x-1.x-dev/metatag_custom_tags/metatag_custom_tags.links.menu.yml

entity.metatag_custom_tag.collection:
  title: 'Custom tags'
  description: 'Configure Custom tags.'
  route_name: entity.metatag_custom_tag.collection
  parent: entity.metatag_defaults.collection
  weight: 20