<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <preference for="Amasty\Shopby\Model\Layer\Filter\Category" type="Dinhvan\Attributes\Preference\Model\Layer\Filter\Category" />
    <preference for="Amasty\Shopby\Helper\Category" type="Dinhvan\Attributes\Preference\Helper\Category" />
</config>
