interface EntityChangedInterface

interface EntityChangedInterface extends EntityInterface {
  
  /**
   * Gets the timestamp of the last entity change for the current translation.
   *
   * @return int
   *   The timestamp of the last entity save operation.
   */
  public function getChangedTime();
  
  /**
   * Sets the timestamp of the last entity change for the current translation.
   *
   * @param int $timestamp
   *   The timestamp of the last entity save operation.
   *
   * @return $this
   */
  public function setChangedTime($timestamp);
  
  /**
   * Gets the timestamp of the last entity change across all translations.
   *
   * This method will return the highest timestamp across all translations. To
   * check that no translation is older than in another version of the entity
   * (e.g. to avoid overwriting newer translations with old data), compare each
   * translation to the other version individually.
   *
   * @return int
   *   The timestamp of the last entity save operation across all
   *   translations.
   */
  public function getChangedTimeAcrossTranslations();

}