server-ux/barcode_action/demo/barcode_action_demo.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <data>
        <act_window id="res_partner_find"
            name="Find Partner"
            res_model="barcode.action"
            view_mode="form"
            view_type="form"
            context="{'default_model': 'res.partner', 'default_method': 'find_res_partner_by_ref_using_barcode'}"
            target="new"/>

        <menuitem id="menu_orders_customers" name="Find partners"
            action="res_partner_find"
            parent="base.menu_administration"/>

    </data>
</odoo>