如何在Mailjet分页中获取最后一页或总记录

如何解决如何在Mailjet分页中获取最后一页或总记录

https://github.com/mailjet/mailjet-apiv3-php#use-paging-and-sorting 使用分页和排序

<?PHP
/*
Retrieve a specific contact ID :
*/
require 'vendor/autoload.PHP';
use \Mailjet\Resources;
$mj = new \Mailjet\Client(getenv('MJ_APIKEY_PUBLIC'),getenv('MJ_APIKEY_PRIVATE'));
$filters = [
    'Limit'=>40,// default is 10,max is 1000
    'Offset'=>20,'Sort'=>'ArrivedAt DESC','Contact'=>$contact->ID,'showSubject'=>true
];
$response = $mj->get(Resources::$Message,['filters'=>$filters]);
$response->success() && var_dump($response->getData());
?>

我无法获取最后一页或总项目数。你能帮我么？谢谢，