selector = $selector; $this->token = $token; } /** * export a callback function which updates runtime metadata. * * @return callable updateMetadata function */ public function getUpdateMetadataFunc() { return array($this, 'updateMetadata'); } /** * Updates metadata with the appropriate header metadata. * * @param array $metadata metadata hashmap * @param string $unusedAuthUri optional auth uri * @param callable $httpHandler callback which delivers psr7 request * Note: this param is unused here, only included here for * consistency with other credentials class * * @return array updated metadata hashmap */ public function updateMetadata( $metadata, $unusedAuthUri = null, callable $httpHandler = null ) { $metadata_copy = $metadata; $metadata_copy[self::SELECTOR_KEY] = $this->selector; $metadata_copy[self::TOKEN_KEY] = $this->token; return $metadata_copy; } }