Private methods in a ExtJs4 class, using kind of Module Pattern. Do not abuse of this!!!

gistfile1.js

Ext.define('PrivateTest', (function () {
    var privTest = function (param) {
        return 'privTest method!!!';
    };
    
    var privTest2 = function (param) {
       return 'another privTest2('+param+') method!!!';
    };

    return {
        constructor: function () {
            this.callParent(arguments);
        },
        
        chooseMethod: function (what) {
            switch (what) {
                case 1: return privTest;
                case 2: return privTest2;
                default: return privTest;
            }
        }
    } // EO return
})()
);


var myTest = Ext.create('PrivateTest');
var res1 = myTest.chooseMethod(1)();
console.log('a ver??? '+res1);
var res2 = myTest.chooseMethod(2)('secondary');
console.log('with a param: '+res2);