/**
* Retrieve the URI from the request.
*
* If the request instance is a Stratigility decorator, pull the URI from
* the original request; otherwise, pull it directly.
*
* @param RequestInterface $request
* @return \Psr\Http\Message\UriInterface
*/
private function getUriFromRequest(RequestInterface $request)
{
if ($request instanceof Http\Request) {
$original = $request->getOriginalRequest();
return $original->getUri();
}
return $request->getUri();
}