"download_url", "encryptedKey" => "encrypted_key", ]; public $downloadUrl; public $encryptedKey; public $language; public $size; public $version; public function setDownloadUrl($downloadUrl) { $this->downloadUrl = $downloadUrl; } public function getDownloadUrl() { return $this->downloadUrl; } public function setEncryptedKey($encryptedKey) { $this->encryptedKey = $encryptedKey; } public function getEncryptedKey() { return $this->encryptedKey; } public function setLanguage($language) { $this->language = $language; } public function getLanguage() { return $this->language; } public function setSize($size) { $this->size = $size; } public function getSize() { return $this->size; } public function setVersion($version) { $this->version = $version; } public function getVersion() { return $this->version; } } // Adding a class alias for backwards compatibility with the previous class name. class_alias(MetadataItems::class, 'Google_Service_Books_MetadataItems');