[Bug]: Can't download imageFile generated by code_interpreter

[udgithub]

Description

Hello guys,

first of all: thanks for your great development.
So I as an PHP developer can use OpenAI API almost as convenient as with Python.

Now the problem:
If I go through all messages I can find a $contentPart->type of "image_file" .
If I try to get the image data like this:

$imageFileId = $contentPart->imageFile->fileId;
$imageFile = $client->files()->retrieve($imageFileId);
$imageData = $client->files()->download($imageFile);

I get an error:
Fatal error: Uncaught TypeError: OpenAI\Responses\Files\RetrieveResponse::__construct(): Argument #3 ($bytes) must be of type int, null given, called in /my-project-path/vendor/openai-php/client/src/Responses/Files/RetrieveResponse.php on line 51 and defined in /my-project-path/vendor/openai-php/client/src/Responses/Files/RetrieveResponse.php on line 30

That is the loop to process the messages:

    foreach ($messages->data as $message) {
        if (!empty($message->content)) {
            foreach ($message->content as $contentPart) {
                if ($contentPart->type == "text") {
		    # skipping this to keep code small
                } elseif ($contentPart->type == "image_file") {
                    $imageFileId = $contentPart->imageFile->fileId;
                    $imageFile = $client->files()->retrieve($imageFileId);
                    $imageData = $client->files()->download($imageFile);
                    print_r($imageData);
                    file_put_contents("image_$imageCounter.png", $imageData);
                    $imageCounter++;
                }
            }
        }
    }

It would be great if you could give me an hint what I'm doing wrong or fix the bug if it is one.
Thanks a lot in advance for your help.

Steps To Reproduce

create an assistant of type code_interpreter and send a request like
plot these numbers in a graph: 1,2,3,4,15,73,12
then try to read the messages and download the imageFile

OpenAI PHP Client Version

0.8.1

PHP Version

8.1.2

Notes

No response

[udgithub]

OK, I found the solution:
Your documenation said: `$client->files()->download($file);
So I retrieved the file info.
But now it works, when I use the fileId:

$imageFileId = $contentPart->imageFile->fileId;
# don't do THIS:   $imageFile = $client->files()->retrieve($imageFileId);
$imageData = $client->files()->download($imageFileId);

Sorry for misunderstanding your excellent documentation.