RequestFactory.php

См. документацию.

<?php
namespace Bitrix\Main\UpdateSystem;
 
class RequestFactory
{
    private RequestBuilderInterface $builder;
 
    public function __construct(RequestBuilderInterface $builder)
    {
        $this->builder = $builder;
    }
 
    public function build(): Request
    {
        return $this->builder->setUrl()->setHeaders()->setProxy()->setBody()->build();
    }
}