<?xml version="1.0"?>
<search string="Product Lots Filter">
                <field name="name" string="Lot/Serial Number" filter_domain="['|', ('name', 'ilike', self),('ref', 'ilike', self)]"/>
                <field name="product_id"/>
                <group expand="0" string="Group By">
                    <filter name="group_by_product" string="Product" domain="[]" context="{'group_by': 'product_id'}"/>
                </group>
            </search>
        