Hello, 
I am trying to inherit Odoo 16 pos _getSearchFields js function and add a search field by the name Order Reference. It should appear as shown in the dropdown of the searchbar below.



How can I go about this?

Thanks in advance.

Here is my code.

oo.define('pos_customizations.TicketScreen', function (require) {
  "use strict";
  var TicketScreen = require("point_of_sale.TicketScreen");
  TicketScreen.include({
    /**
    * @returns {Record string, displayName: string, modelField: string }>}
    */
    _getSearchFields() {
      const fields = {
        RECEIPT_NUMBER: {
          repr: (order) => order.name,
          displayName: this.env._t('Receipt Number'),
          modelField: 'pos_reference',
        },
        DATE: {
          repr: (order) => moment(order.creation_date).format('YYYY-MM-DD hh:mm A'),
          displayName: this.env._t('Date'),
          modelField: 'date_order',
        },
        PARTNER: {
          repr: (order) => order.get_partner_name(),
          displayName: this.env._t('Customer'),
          modelField: 'partner_id.display_name',
        },
        NAME: {
          repr: (order) => order.name(),
          displayName: this.env._t('Order Ref'),
          modelField: 'name',
        },
      };
      return fields;
    }

  })
  return TicketScreen;
});