res/sources/array.js
function (callback, thisArg) {
            var me = this;
            this._sources.forEach(function (source, index) {
                callback(me._update(source), index);
            }, thisArg);
        }
function (callback, thisArg) {
            var me = this;
            this._sources.forEach(function (source, index) {
                callback(me._update(source), index);
            }, thisArg);
        }
function ( callback , thisArg ) { var me = this ; this . _sources . forEach ( function ( source , index ) { callback ( me . _update ( source ) , index ) ; } , thisArg ) ; }
Enumerate all sources

@param {Function} callback Called on each source
@param {*} thisArg This context
Enumerate all sources