How to use a model in a controller on a multi-module Phalcon?

Question

Phalcon

Please help a newbie. The second day I struggle and don't understand...
I took the skeleton from here and try to set it up:
https://github.com/phalcon/mvc/tree/master/multiple
File /apps/frontend/controllers/PagesController.php:

namespace Multiple\Frontend\Controllers;
use Phalcon\Mvc\Controller;
class PagesController extends Controller{
    public function indexAction(){
        echo Pages::testvar;
        exit;
    }
}

File /apps/frontend/models/Pages.php:

use Phalcon\Mvc\Model;
class Pages extends Model{
    public $testvar = "777";
}

In the router, the rule is to send everything to the PagesController.
As a result, when accessing, an error pops up that they say:

Fatal error: Uncaught Error: Class 'Multiple\Frontend\Controllers\Pages' not found in /var/www/phalcon.loc/apps/frontend/controllers/PagesController.php:11 Stack trace: #0 [internal function]: Multiple\Frontend\Controllers\PagesController->indexAction('xxxpage') #1 [internal function]: Phalcon\Dispatcher->callActionMethod(Object(Multiple\Frontend\Controllers\PagesController), 'indexAction', Array) #2 [internal function]: Phalcon\Dispatcher->dispatch() #3 /var/www/phalcon.loc/public/index.php(93): Phalcon\Mvc\Application->handle() #4 /var/www/phalcon.loc/public/index.php(98): Application->main() #5 {main} thrown in /var/www/phalcon.loc/apps/frontend/controllers/PagesController.php on line 11

The 11th line is actually: echo Pages::testvar;
You can put find or something else, it doesn't matter.
I will repeat, just in case, once again, the skeleton of a multi-module application is taken from the github, i.e. there is not much of my own activity in it.
Tell me what is my mistake?

Answer 1

I find something on the Toaster less and less often... it's sad...
I finished it myself again. I leave the solution to the problem (I don’t know the correct solution or not) for posterity :-)
In the controller, we specify the model we are going to work with:
use Multiple\Frontend\Models\Pages as Pages;
and in the model itself, we specify the namespace where it lies:
namespace Multiple\Frontend\Models;