final RenderableReplacedContentBox xyChart = (RenderableReplacedContentBox) renderNode;
RenderableReplacedContent xyChartContent = xyChart.getContent();
assertTrue(xyChartContent.getRawObject() instanceof DrawableWrapper);
final DrawableWrapper drawable = (DrawableWrapper)xyChartContent.getRawObject();
assertTrue(drawable.getBackend() instanceof JFreeChartReportDrawable);
final JFreeChartReportDrawable jFreeChartReportDrawable = (JFreeChartReportDrawable)drawable.getBackend();
final JFreeChart xyLineChart = jFreeChartReportDrawable.getChart();
final XYPlot xyLinePlot = xyLineChart.getXYPlot();
assertTrue(xyLinePlot.getRenderer() instanceof XYLineAndShapeRenderer);
final XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer)xyLinePlot.getRenderer();