showOutliers (show) {
        if (!arguments.length) {
            return this._showOutliers;
        }
        this._showOutliers = show;
        return this;
    }
Get or set whether outliers will be rendered.
@example
// Disable rendering of outliers
chart.showOutliers(false);
@param {Boolean} [show=true]
@returns {Boolean|BoxPlot}