Here is my code to inherit ListRenderer but main function keeps working as it is and my super is not working, Here is my code

/** @odoo-module */

import { ListRenderer } from "@web/views/list/list_renderer";

const { useEffect } = owl;

export class NewListRenderer extends ListRenderer {
setup() {
    super.setup();
    console.log('uhuhuhu');
    this.creates = this.props.archInfo.creates.length
        ? this.props.archInfo.creates
        : [{ type: "create", string: env._t("Add a line++++") }];    }


}

and i have called it in manifest like 

'assets': {
    'web.assets_backend': [
        'med_exam/static/src/list_render.js',
    ],

},

Cann anyone explain why it is not working? Thanks,