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();

}