protected function processPrefixedHeaders(Response $response, Parameter $param, &$value)
    {
        // Grab prefixed headers that should be placed into an array with the prefix stripped
        if ($prefix = $param->getSentAs()) {
            $container = $param->getName();
            $len = strlen($prefix);
            // Find all matching headers and place them into the containing element
            foreach ($response->getHeaders()->toArray() as $key => $header) {
                if (stripos($key, $prefix) === 0) {
                    // Account for multi-value headers
                    $value[$container][substr($key, $len)] = count($header) == 1 ? end($header) : $header;
                }
            }
        }
    }