system_entity_type_build

system_entity_type_build(array &$entity_types)

function system_entity_type_build(array &$entity_types) {
  /** @var $entity_types \Drupal\Core\Entity\EntityTypeInterface[] */
  $entity_types['date_format']
  ->setFormClass('add', 'Drupal\system\Form\DateFormatAddForm')
    ->setFormClass('edit', 'Drupal\system\Form\DateFormatEditForm')
    ->setFormClass('delete', 'Drupal\system\Form\DateFormatDeleteForm')
    ->setListBuilderClass('Drupal\system\DateFormatListBuilder')
    ->setLinkTemplate('edit-form', '/admin/config/regional/date-time/formats/manage/{date_format}')
    ->setLinkTemplate('delete-form', '/admin/config/regional/date-time/formats/manage/{date_format}/delete')
    ->setLinkTemplate('collection', '/admin/config/regional/date-time/formats');
}