report.xml

<?xml version="1.0" encoding="UTF-8" ?>
<odoo>
    <record id="demo_report" model="ir.actions.report">
        <field name="name">Watermark Demo report</field>
        <field name="model">res.users</field>
        <field name="report_type">qweb-pdf</field>
        <field name="report_name">report_qweb_pdf_watermark.demo_report_view</field>
        <field name="report_file">report_qweb_pdf_watermark.demo_report_view</field>
        <field name="pdf_watermark_expression">docs[:1].company_id.logo</field>
        <field name="binding_model_id" ref="base.model_res_users" />
        <field name="binding_type">report</field>
    </record>
    <template id="demo_report_view">
        <t t-call="web.html_container">
            <t t-call="web.external_layout">
                <div class="page">
                    <ul>
                        <li t-foreach="docs" t-as="doc">
                            <t t-esc="doc.name" />
                        </li>
                    </ul>
                </div>
            </t>
        </t>
    </template>
</odoo>