Expanded class hierarchy of LayoutEntityDisplayInterface in Drupal 9
- interface \Drupal\Core\Entity\Display\EntityDisplayInterface; interface \Drupal\layout_builder\SectionListInterface extends \Drupal\layout_builder\Countable; interface \Drupal\layout_builder\LayoutBuilderEnabledInterface
- interface \Drupal\layout_builder\Entity\LayoutEntityDisplayInterface