'{username}', 'apiKey' => '{apiKey}', )); // 2. Obtain a Database service object from the client. $databaseService = $client->databaseService(null, '{region}'); // 3. Retrieve the database datastore. $datastore = $databaseService->datastore('{datastoreId}'); // 4. List versions using this datastore. $versions = $datastore->versionList(); foreach ($versions as $version) { /** @var $version OpenCloud\Database\Resource\DatastoreVersion **/ }