Missing Ref Accessor methods.

I am trying to port my ExtJS 4.2 based app to 5.0. My Controller code is as below.

Code:

Ext.define('MyCompany.controller.CustomerAccountController', {
  extend: 'Ext.app.Controller',
  views: ['CustomersView'],
  stores: ['CustomerAccounts'],
  models : ['AppState', 'CustomerAccount'],
  config: {
    selectedCustomer: ''
  },
  refs: [{
        ref: 'customersView',
        selector: 'customersview'
    }, {
        ref: 'customersFilter',
        selector: 'customersview textfield[name=filter]'
    }, {
        ref: 'customersList',
        selector: 'customersview grid[name=customerslist]'
    }


....
....

    setSelectedCustomer: function() {
        var customerList = this.getCustomersList(); //Throws undefined function exception 
......
    },

ExtJS 4.2 exposed accessor methods for all the refs declared. Looks like that feature has been removed in ExtJs 5. I read through the migration guide and did not find any guidelines on this. Is there a recommended way on how to migrate the refs accessors to 5.0?

Thanks in advance,

Kishore