form_mode_manager-8.x-1.x-dev/form_mode_manager.routing.yml

# Form Mode Manager UI routes
form_mode_manager.admin_settings:
  path: '/admin/config/content/form_mode_manager'
  defaults:
    _form: 'Drupal\form_mode_manager\Form\FormModeManagerForm'
    _title: 'Form Mode Manager settings'
  requirements:
    _permission: 'administer site configuration'
  options:
    _admin_route: TRUE

form_mode_manager.admin_settings_links_task:
  path: '/admin/config/content/form_mode_manager/links-task'
  defaults:
    _form: 'Drupal\form_mode_manager\Form\FormModeManagerLinksForm'
    _title: 'Form Mode Manager settings Links task'
  requirements:
    _permission: 'administer site configuration'
  options:
    _admin_route: TRUE