examples-3.x-dev/modules/theming_example/theming_example.routing.yml

# Main page of the theming example.
theming_example.entry:
  path: '/examples/theming_example'
  defaults:
    _controller: '\Drupal\theming_example\Controller\ThemingPageController::entryPage'
    _title: 'Theming example'
  requirements:
    _permission: 'access content'

theming_example.list:
  path: '/examples/theming_example/list'
  defaults:
    _controller: '\Drupal\theming_example\Controller\ThemingPageController::list'
    _title: 'Theming a list'
  requirements:
    _permission: 'access content'

theming_example.form_select:
  path: '/examples/theming_example/form_select'
  defaults:
    _form: '\Drupal\theming_example\Form\SelectForm'
    _title: 'Theming a form (select form)'
  requirements:
    _permission: 'access content'

theming_example.form_text:
  path: '/examples/theming_example/form_text'
  defaults:
    _form: '\Drupal\theming_example\Form\TextForm'
    _title: 'Theming a form (text form)'
  requirements:
    _permission: 'access content'