Update BaseProduct.php
Update BaseProduct.php

Fixing issue #293
Soullivaneuh/sonata-ecommerce,Soullivaneuh/sonata-ecommerce,Soullivaneuh/sonata-ecommerce,sonata-project/ecommerce,Soullivaneuh/sonata-ecommerce,sonata-project/ecommerce,sonata-project/ecommerce,sonata-project/ecommerce