lobotko

public function findToTitle($value)
{
    return $this->createQueryBuilder('s')
        ->andWhere('LOWER(s.title) LIKE :val')
        ->setParameter('val', '%'.$value.'%')
        ->setMaxResults(10)
        ->getQuery()
        ->getResult()
    ;
}

#src/Model/ProductProxy.php
<?php

namespace App\Model;

use ВашПакет\Product;

class ProductProxy extends Product
{
    public function newMethod(): void
    {
        echo "Hello World!";
    }
}