Deprecation messages with PHP 8.2

[catalyst-marcus-green]

I am getting these deprecation messages with Moodle 4.4, PHP 8.2.18 on branch MOODLE_402_STABLE
(I acknowledge the 4.4/402 mismatch but the fix should work with earlier PHP/Moodle combinations).

The following code fixed the first error, and I believe the others could be addressed similarly. Should I create a pull for the 402 branch?

class document extends \core_search\document {
    /**
     * Details from plugin settings
     *
     * @var string
     */
    public $config;

Error messages
Deprecated: Creation of dynamic property search_elastic\document::$config is deprecated in /var/www/mdl44/search/engine/elastic/classes/document.php on line 133

Deprecated: Creation of dynamic property search_elastic\document::$fileindexing is deprecated in /var/www/mdl44/search/engine/elastic/classes/document.php on line 134

Deprecated: Creation of dynamic property search_elastic\document::$config is deprecated in /var/www/mdl44/search/engine/elastic/classes/document.php on line 133

Deprecated: Creation of dynamic property search_elastic\document::$fileindexing is deprecated in /var/www/mdl44/search/engine/elastic/classes/document.php on line 134