content_entity_base-8.x-1.x-dev/src/Entity/Storage/RevisionableStorageInterface.php

<?php

namespace Drupal\content_entity_base\Entity\Storage;

use Drupal\Core\Entity\ContentEntityInterface;
use Drupal\Core\Entity\EntityStorageInterface;

/**
 * Defines some additional storage methods used for revision support.
 */
interface RevisionableStorageInterface extends EntityStorageInterface {

  /**
   * Counts the number of revisions in the default language.
   *
   * @param \Drupal\Core\Entity\ContentEntityInterface $entity
   *   The entity.
   *
   * @return int The number of revisions in the default language.
   *   The number of revisions in the default language.
   */
  public function countDefaultLanguageRevisions(ContentEntityInterface $entity);

  /**
   * Gets a list of revision IDs for a specific entity.
   *
   * @param \Drupal\Core\Entity\ContentEntityInterface $entity
   *   The content entity.
   *
   * @return int[]
   *   Entity revision IDs (in ascending order).
   */
  public function revisionIds(ContentEntityInterface $entity);

}