public function getPsrResponse(FeedInterface $feed, string $standard, int $maxAge = 600, bool $public = true) : ResponseInterface
    {
        $this->logAction($feed, "creating a PSR 7 Response in $standard format");

        $formatter = $this->getStandard($standard)->getFormatter();
        $responseBuilder = new ResponseBuilder($maxAge, $public);

        return $responseBuilder->createResponse($standard, $formatter, $feed);
    }