Why does method RequestModelFactory::getRequestData() return an array and not a DTO?

[lav45]

namespace Yiisoft\RequestModel;

final class RequestModelFactory
{
    private function getRequestData(ServerRequestInterface $request): array
    {
        return [
            'query' => $request->getQueryParams(),
            'body' => $request->getParsedBody(),
            'attributes' => $request->getAttributes(),
            'headers' => $request->getHeaders(),
            'files' => $request->getUploadedFiles(),
            'cookie' => $request->getCookieParams(),
            'router' => $this->currentRoute->getArguments(),
        ];
    }
}

[samdark]

What's the benefit of using DTO here?

[lav45]

The transparency

• of the IDE code will quickly show where the value was set
• the entire list of properties is visible

[vjik]

I like this idea.