BaseMessageEvent.php

См. документацию.

<?php
 
namespace Bitrix\Im\V2\Pull\Event;
 
use Bitrix\Im\V2\Message;
 
abstract class BaseMessageEvent extends BaseChatEvent
{
    protected Message $message;
 
    public function __construct(Message $message)
    {
        parent::__construct($message->getChat());
        $this->message = $message;
    }
}