Queues: Wrong return type in DatabaseJob->getJobId()?

[Tjaitil]

Hello,

In my laravel 11 application I've encountered a mismatch between return type in docblock and the actual value returned. I'm using database as the queue_connection.

In the following example

<?php

namespace App\Jobs;

use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Queue\Queueable;

class FooJob implements ShouldQueue
{
    use Queueable;

    /**
     * Create a new job instance.
     */
    public function __construct()
    {
    }

    /**
     * Execute the job.
     */
    public function handle(): void
    {   
        $baz = $this->job->getJobId();
        var_dump($baz);
    }
}

When job is dispatched $baz is assigned an integer from getJobId() even though the documentation specifies that it returns a string?
I get why DatabaseJob is specifying a return type string since it is implementing Illuminate\Contracts\Queue\Job which specifies that jobId should return a string.
And I get that the jobId returned is equilvalent to the id in jobs table in database. Since when dispatching the job with sync as queue_connection the value is an empty string.

But then I'm left wondering if the docblock here is potentially wrong or the return type is wrong?

Anything I have missed/misunderstood?