figureslibres.cc/user/plugins/aura/classes/webpage.php

<?php
namespace Grav\Plugin\Aura;

class WebPage
{
    public $url;
    public $id;
    public $language;
    public $title;
    public $description;
    public $datePublished;
    public $dateModified;
    public $image;
    public $type = 'website';
    public $metadata;
}