DefaultPolicy::forceFormatFromResourceString PHP Method

    protected function forceFormatFromResourceString(Request &$request)
    {
        $lastPartIndex = count($request->resourceParts) - 1;
        if ($lastPartIndex < 0) {
            return $request;
        }
        $lastPart = $request->resourceParts[$lastPartIndex];
        $lastDotPosition = strrpos($lastPart, Library::dotSeparator);
        if ($lastDotPosition !== false) {
            $format = substr($lastPart, $lastDotPosition + 1);
            if ($format !== '') {
                $mime = MimeTypes::preferredMimeTypeFor($format);
                if ($mime !== false) {
                    $request->accepts->forceFormat($format);
                    $request->setResource(substr($request->resource, 0, strrpos($request->resource, Library::dotSeparator)));
                }
            }
        }
        return $request;
    }