/**
                             * StackedAxisBase manages stacked numeric data for an axis.
                             *
                             * @class StackedAxisBase
                             * @constructor
                             * @extends AxisBase
                             * @uses StackedImpl
                             * @param {Object} config (optional) Configuration parameters.
                             * @submodule axis-stacked-base
                             */
                            Y.StackedAxisBase = Y.Base.create("stackedAxisBase", Y.NumericAxisBase, [Y.StackedImpl]);