queue.php

<?php
 
namespace Bitrix\Main\Web\Http;
 
use Bitrix\Main\Application;
 
abstract class Queue
{
    public function __construct(bool $backgroundJob = true)
    {
        if ($backgroundJob)
        {
            // wait for promises if no one called wait()
            Application::getInstance()->addBackgroundJob([$this, 'wait'], [], Application::JOB_PRIORITY_LOW);
        }
    }
 
    abstract public function wait(?Promise $targetPromise = null): array;
}