protected function getResults(string $username, ServerRequestInterface $request): \MongoDB\Driver\Cursor
    {
        $q = new \MongoDB\Driver\Query(
            array_merge($this->query, [($this->fieldUser) => $username]),
            ['projection' => [($this->fieldUser) => true, ($this->fieldPass) => true]]
        );
        return $this->manager->executeQuery($this->collection, $q, $this->rp);
    }