/**
                             * Provides functionality for creating a stacked area spline series.
                             *
                             * @module charts
                             * @submodule series-areaspline-stacked
                             */
                            /**
                             * StackedAreaSplineSeries creates a stacked area chart with points data points connected by a curve.
                             *
                             * @class StackedAreaSplineSeries
                             * @extends AreaSeries
                             * @uses CurveUtil
                             * @uses StackingUtil
                             * @constructor
                             * @param {Object} config (optional) Configuration parameters.
                             * @submodule series-areaspline-stacked
                             */
                            Y.StackedAreaSplineSeries = Y.Base.create("stackedAreaSplineSeries", Y.AreaSeries, [Y.CurveUtil, Y.StackingUtil], {
                                /**
                                 * @protected
                                 *
                                 * Draws the series.
                                 *
                                 * @method drawSeries
                                 */
                                drawSeries: function()
                                {
                                    this._stackCoordinates();
                                    this.drawStackedAreaSpline();
                                }
                            }, {
                                ATTRS : {
                                    /**
                                     * Read-only attribute indicating the type of series.
                                     *
                                     * @attribute type
                                     * @type String
                                     * @default stackedAreaSpline
                                     */
                                    type: {
                                        value:"stackedAreaSpline"
                                    }
                                }
                            });