joomla-oauth-server/plg_user_oauthserver/src/Extension/Plugin.php

<?php

namespace Webmasterskaya\Plugin\User\OauthServer\Extension;

use Joomla\CMS\Plugin\CMSPlugin;
use Joomla\Event\SubscriberInterface;

class Plugin extends CMSPlugin  implements SubscriberInterface
{
    public static function getSubscribedEvents(): array
    {
        // TODO: Implement getSubscribedEvents() method.
    }
}