class ContentModerationStateAccessControlHandler

class ContentModerationStateAccessControlHandler extends EntityAccessControlHandler {
    
    /**
     * {@inheritdoc}
     */
    public function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
        // ContentModerationState is an internal entity type. Access is denied for
        // viewing, updating, and deleting. In order to update an entity's
        // moderation state use its moderation_state field.
        return AccessResult::forbidden('ContentModerationState is an internal entity type.');
    }
    
    /**
     * {@inheritdoc}
     */
    protected function checkCreateAccess(AccountInterface $account, array $context, $entity_bundle = NULL) {
        // ContentModerationState is an internal entity type. Access is denied for
        // creating. In order to update an entity's moderation state use its
        // moderation_state field.
        return AccessResult::forbidden('ContentModerationState is an internal entity type.');
    }

}