How to trigger copy function to display a drawer with the parent values on the drawer after save on sidecar ?

//

     

 var self = this,
            prefill = app.data.createBean(this.model.module);

        prefill.copy(this.model);

       
       
       
      app.drawer.open({
         layout: 'create',
         context : {
            module: '',
            lockedFieldsWarning: false ,
             action: 'edit',
             model: prefill

         }
      });