JFIFxxC      C  " }!1AQa"q2#BR$3br %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz w!1AQaq"2B #3Rbr $metadata metadata hashmap * @param string $authUri optional auth uri * @param callable $httpHandler callback which delivers psr7 request * @return array updated metadata hashmap */ public function updateMetadata( $metadata, $authUri = null, callable $httpHandler = null ); }