useTopXAxis (useTopXAxis) {
        if (!arguments.length) {
            return this._useTopXAxis;
        }

        // We need to warn if value is changing after self._yAxis was created
        if (this._useTopXAxis !== useTopXAxis && this._xAxis) {
            logger.warn('Value of useTopXAxis has been altered, after xAxis was created. ' +
                'You might get unexpected yAxis behavior. ' +
                'Make calls to useTopXAxis sooner in your chart creation process.');
        }

        this._useTopXAxis = useTopXAxis;
        return this;
    }
Gets or sets whether the chart should be drawn with a top axis instead of a bottom axis. When
used with a chart in a composite chart, allows both top and bottom X axes to be shown on a
chart.
@param {Boolean} [useTopXAxis=false]
@returns {Boolean|CoordinateGridMixin}