reporting-engine/report_xlsx/demo/report.xml

<?xml version="1.0" encoding="UTF-8" ?>
<odoo>
    <!--
    © 2017 Creu Blanca
    License AGPL-3.0 or later (https://www.gnuorg/licenses/agpl.html).
    -->
    <report
        id="partner_xlsx"
        model="res.partner"
        string="Print to XLSX"
        report_type="xlsx"
        name="report_xlsx.partner_xlsx"
        file="res_partner"
        attachment_use="False"
    />
</odoo>