Hi i have a js in a module called odoo.define('custom1')  in that i have a backbone model like below.

i need to extend the initialize function in my custom module js.I can get the "somename" by adding require("custom1") but cant access the initialize function.

odoo.define('custom1', function(require){
var exports ={}
     exports.somename = Backbone.Model.extend({
      initialize: function(test){
        //some code
      },
});
return exports;
 });