node_singles-3.0.2/node_singles.routing.yml

node_singles.overview:
  path: '/admin/content/singles'
  defaults:
    _controller: '\Drupal\node_singles\Controller\OverviewController::overview'
    _title_callback: '\Drupal\node_singles\Controller\OverviewController::title'
  requirements:
    _permission: 'access node singles overview'

node_singles.settings:
  path: '/admin/config/content/node-singles'
  defaults:
    _form: \Drupal\node_singles\Form\SettingsForm
    _title_callback: '\Drupal\node_singles\Form\SettingsForm::title'
  requirements:
    _permission: 'administer site configuration'