merci-8.x-2.x-dev/merci.routing.yml

merci.admin_merci:
  path: '/admin/merci'
  defaults:
    _controller: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
    _title: 'Merci'
  requirements:
    _permission: 'access merci administration pages'

merci.configuration:
  path: '/admin/merci/config'
  defaults:
    _controller: '\Drupal\system\Controller\SystemController::overview'
    link_id: 'merci.configuration'
    _title: 'Configuration'
  requirements:
    _permission: 'access merci administration pages'