Expanded class hierarchy of ItemInterface

interface \Drupal\Core\TypedData\ComplexDataInterface extends \Traversable; interface \Drupal\Core\TypedData\AccessibleInterface; interface \Drupal\Core\TypedData\TranslatableInterface
- interface \Drupal\Core\Entity\EntityInterface
  - interface \Drupal\contact\MessageInterface
  - interface \Drupal\Core\Config\Entity\ConfigEntityInterface
  - interface \Drupal\Core\Entity\ContentEntityInterface
    interface \Drupal\aggregator\FeedInterface
    
    interface \Drupal\aggregator\ItemInterface
    
    interface \Drupal\comment\CommentInterface
    
    interface \Drupal\custom_block\CustomBlockInterface
    
    interface \Drupal\file\FileInterface
    
    interface \Drupal\menu_link\MenuLinkInterface
    
    interface \Drupal\node\NodeInterface
    
    interface \Drupal\taxonomy\TermInterface
  - interface \Drupal\user\UserInterface