# source: https://github.com/Sylius/Sylius/blob/master/UPGRADE-1.0.md#upgrade-from-108-to-109

services:
    # @todo, use this and return typehint
    Rector\Rector\Typehint\ReturnTypehintRector:
        # class
        Sylius\Bundle\CoreBundle\Templating\Helper\VariantResolverHelper:
            # method
            'resolveVariant': '?Sylius\Component\Product\Model\ProductVariantInterface'