domain_sites-1.0.x-dev/domain_sites.links.menu.yml

domain_sites.settings:
  title: Domain Sites settings
  route_name: domain_sites.settings
  parent: domain.admin
  description: 'Domain Sites settings'

domain_sites.list:
  title: 'Sites'
  route_name: domain_sites.list
  parent: system.admin
  description: 'View all domain sites.'

domain_sites.add:
  route_name: domain_sites.add
  title: 'Add site'
  parent: domain_sites.list
  description: 'Add a domain site.'