Indexing API is not Returning result for latestupdate

[chiragvels]

Environment details

• OS: Linux
• PHP version: 8.1
• Package name and version: v2.17.0

Steps to reproduce

1. https://indexing.googleapis.com/batch use with Google_Service_Indexing
2. Google_Service_Indexing_UrlNotification to get response

Code example

$response_meta = $result->getUrlNotificationMetadata();

if ($response_meta) {
    $response_latest_update = $response_meta->getLatestUpdate();
    
    if ($response_latest_update) {
        $response_url = $response_latest_update->getUrl();
        $response_type = $response_latest_update->getType();
        $response_notify_type = $response_latest_update->getNotifyTime();
        
        echo 'URL: ' . $response_url . PHP_EOL;
        echo 'Type: ' . $response_type . PHP_EOL;
        echo 'Notify Time: ' . $response_notify_type . PHP_EOL;
    } else {
        echo 'No latest update found for this URL.' . PHP_EOL;
    }
} else {
    echo 'No metadata found for this URL.' . PHP_EOL;
}

I am not getting $response_latest_update response.

Response is only this:

Google\Service\Indexing\UrlNotificationMetadata Object
(
    [latestRemove] => 
    [latestRemoveType:protected] => Google\Service\Indexing\UrlNotification
    [latestRemoveDataType:protected] => 
    [latestUpdate] => 
    [latestUpdateType:protected] => Google\Service\Indexing\UrlNotification
    [latestUpdateDataType:protected] => 
    [url] => https://example.com/blog
    [internal_gapi_mappings:protected] => Array
        (
        )

    [modelData:protected] => Array
        (
        )

    [processed:protected] => Array
        (
        )

)

Reference:

https://developers.google.com/search/apis/indexing-api/v3/reference/indexing/rest/v3/UrlNotificationMetadata

https://developers.google.com/search/apis/indexing-api/v3/reference/indexing/rest/v3/urlNotifications#UrlNotification

Thanks!