function (cb, context) {
        assertSeriesInitialized(this);
        each(this._seriesIndices, function (rawSeriesIndex) {
            var series = this._componentsMap.get('series')[rawSeriesIndex];
            cb.call(context, series, rawSeriesIndex);
        }, this);
    }
function (cb, context) {
        assertSeriesInitialized(this);
        each(this._seriesIndices, function (rawSeriesIndex) {
            var series = this._componentsMap.get('series')[rawSeriesIndex];
            cb.call(context, series, rawSeriesIndex);
        }, this);
    }
function ( cb , context ) { assertSeriesInitialized ( this ) ; each ( this . _seriesIndices , function ( rawSeriesIndex ) { var series = this . _componentsMap . get ( 'series' ) [ rawSeriesIndex ] ; cb . call ( context , series , rawSeriesIndex ) ; } , this ) ; }
After filtering, series may be different
frome raw series.

@param {Function} cb
@param {*} context
After filtering series may be different frome raw series .
call the callback for each series