<?xml version="1.0"?>
<data><field name="seller_ids" position="attributes">
                    <attribute name="context">{'default_product_tmpl_id': product_tmpl_id, 'product_template_invisible_variant': True, 'list_view_ref':'purchase.product_product_supplierinfo_tree_view2'}</attribute>
                </field>
                <field name="variant_seller_ids" position="attributes">
                    <attribute name="context">{'model': 'product.product', 'active_id': id, 'list_view_ref':'purchase.product_product_supplierinfo_tree_view2'}</attribute>
                </field>
            </data>