Expanded class hierarchy of CustomBlockTranslationController

class \Drupal\translation_entity\EntityTranslationController implements EntityTranslationControllerInterface
- class \Drupal\node\NodeTranslationController
- class \Drupal\translation_entity\EntityTranslationControllerNG
  - class \Drupal\comment\CommentTranslationController
  - class \Drupal\custom_block\CustomBlockTranslationController
  - class \Drupal\taxonomy\TermTranslationController
- class \Drupal\user\ProfileTranslationController