$request = \Drupal::request();
$gid_is = $request->query->has('gid');
true
$request_uri = $request->getUri();
http://v.estimate/node/add/estimate?gid=92
$get_request_uri = $request->getRequestUri();
/node/add/estimate?gid=92
$path = $request->getPathInfo();
/node/add/estimate