/**
* Updates metadata with the authorization token.
*
* @param array $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 $httpHandler = null)
{
if (empty($authUri)) {
return $metadata;
}
$this->auth->setAudience($authUri);
return parent::updateMetadata($metadata, $authUri, $httpHandler);
}