Neos\Flow\Mvc\Routing\UriBuilder::getRequestNamespacePath PHP Method

    protected function getRequestNamespacePath($request)
    {
        if (!$request instanceof Request) {
            $parentPath = $this->getRequestNamespacePath($request->getParentRequest());
            return $parentPath . ($parentPath !== '' && $request->getArgumentNamespace() !== '' ? '.' : '') . $request->getArgumentNamespace();
        }
        return '';
    }