Model with Entity (return type)

Hello. The model returns a stdClass for the returnType. I would like to have a hint as User class. Is it really possible to do this?

PHP Code:

    protected $returnType = \App\Models\Entity\User::class;

    public function findLast(): stdClass // I have User this
    {
        return $this->builder()
            ->orderBy('id DESC')
            ->get(1)->getRow();
    }