Email notification in laravel

SendNotificationEmail.php

<?php

namespace Eder\Jobs;

use Eder\Jobs\Job;
use Illuminate\Contracts\Mail\Mailer;
use Illuminate\Queue\SerializesModels;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Contracts\Bus\SelfHandling;
use Illuminate\Contracts\Queue\ShouldQueue;

use BMO\Identity\Notification;

class SendNotificationEmail extends Job implements SelfHandling, ShouldQueue
{
    use InteractsWithQueue, SerializesModels;

    protected $emailInfo;
    protected $data;
    protected $notification;

    /**
     * Create a notification job instance.
     *
     * @param  Notification  $notification
     * @return void
     */

    public function __construct(Notification $notification, $emailInfo, array $data)
    {
        $this->notification = $notification;
        $this->emailInfo = $emailInfo;
        $this->data = $data;
    }

    /**
     * Execute the job.
     * get messageId from ses after send email
     *
     * @param  Mailer  $mailer
     * @return void
     */

    public function handle(Mailer $mailer)
    {
        $emailInfo = $this->emailInfo;

        try {
            $sesMessages = $mailer->send($emailInfo['template'], $this->data, function ($message) use ($emailInfo) {
                $message
                    ->to($emailInfo['email'], $emailInfo['name'])
                    ->subject($emailInfo['subject']);
            });
        } catch (Exception $e) {
            \Log::error('send notifications email error' . $e->getMessage());
        }
        
            
        if ($sesMessages && $sesMessages->get('MessageId')) {
            $this->notification->ses_message_id = $sesMessages->get('MessageId');
        }

        $this->notification->sns_notification_type = '';
        $this->notification->save();
    }
}

what is BMO\Identity\Notification;?