* @param ParserOutput $parserOutput
* @param WikiPage $page
* @param ParserOptions $popts
- * @param string $cacheTime Time when the cache was generated
- * @param int $revId Revision ID that was parsed
+ * @param string|null $cacheTime TS_MW timestamp when the cache was generated
+ * @param int|null $revId Revision ID that was parsed
*/
public function save( $parserOutput, $page, $popts, $cacheTime = null, $revId = null ) {
$expire = $parserOutput->getCacheExpiry();