interface TranslatableRevisionableStorageInterface

interface TranslatableRevisionableStorageInterface extends TranslatableStorageInterface, RevisionableStorageInterface {
    
    /**
     * Creates a new revision starting off from the specified entity object.
     *
     * When dealing with a translatable entity, this will merge the default
     * revision with the active translation of the passed entity.
     *
     * @param \Drupal\Core\Entity\RevisionableInterface $entity
     *   The revisionable entity object being modified.
     * @param bool $default
     *   (optional) Whether the new revision should be marked as default. Defaults
     *   to TRUE.
     * @param bool|null $keep_untranslatable_fields
     *   (optional) Whether untranslatable field values should be kept or copied
     *   from the default revision when generating a merged revision. Defaults to
     *   TRUE if the provided entity is the default translation and untranslatable
     *   fields should only affect the default translation, FALSE otherwise.
     *
     * @return \Drupal\Core\Entity\TranslatableRevisionableInterface
     *   A new translatable entity revision object.
     */
    public function createRevision(RevisionableInterface $entity, $default = TRUE, $keep_untranslatable_fields = NULL);
    
    /**
     * Returns the latest revision affecting the specified translation.
     *
     * @param int|string $entity_id
     *   The entity identifier.
     * @param string $langcode
     *   The language code of the translation.
     *
     * @return int|string|null
     *   A revision ID or NULL if no revision affecting the specified translation
     *   could be found.
     */
    public function getLatestTranslationAffectedRevisionId($entity_id, $langcode);

}