How to parse feed from existing string

[dvikan]

I have an existing feed in a string and I wanted to parse it. So I don't need feed-io to fetch it via network. So I am answering my own question with an example:

<?php

namespace kek;

use FeedIo\Adapter\NullClient;
use FeedIo\Feed;
use FeedIo\Parser\XmlParser;
use FeedIo\Reader;
use FeedIo\Reader\Document;
use FeedIo\Rule\DateTimeBuilder;
use FeedIo\Standard\Rss;
use Psr\Log\NullLogger;

require 'vendor/autoload.php';

$client = new NullClient();
$logger = new NullLogger();
$reader = new Reader($client, $logger);
$reader->addParser(new XmlParser(new Rss(new DateTimeBuilder()), $logger));
$document = new Document(file_get_contents('https://news.ycombinator.com/rss'));

$feed = $reader->parseDocument($document, new Feed());

echo "feed title : {$feed->getTitle()} \n";

foreach ($feed as $item) {
    print "  {$item->getTitle()}\n";
}

As far as I understand this is the way to go when wanting to parse a feed when you already have it as a string. Has a readString() method in FeedIo been considered? Would be nice to have all the parser already loaded etc.