如何在内部模块odoo中添加菜单项继承？

<odoo>
    <data>
        <menuitem id="menu_my_menu" name="My Menu" action="action_my_action" parent="menu_root" sequence="10"/>
    </data>
</odoo>

<odoo>
    <data>
        <template id="assets_backend" inherit_id="web.assets_backend">
            <xpath expr="." position="inside">
                <script type="text/javascript" src="/my_module/static/src/js/my_script.js"></script>
            </xpath>
        </template>
        <menuitem name="My Menu" id="menu_my_menu" parent="menu_root" sequence="10"/>
    </data>
</odoo>

from . import views

def _load_data(cr, registry):
    ...
    cr.execute("SELECT id FROM ir_model_data WHERE module = 'my_module' AND name = 'menu_my_menu'")
    if not cr.fetchone():
        cr.execute("INSERT INTO ir_model_data (module, name, model, res_id) VALUES ('my_module', 'menu_my_menu', 'ir.ui.menu', %s)", (menu_id,))
    ...