JFreeChart: XYAreaRenderer2 with StandardXYItemLabelGenerator
===

I am trying to use a `StandardXYItemLabelGenerator` with an `XYAreaRenderer2` renderer, but nothing is showing up. If is use the same code with an `XYLineAndShapeRenderer` I correctly see the labels on the chart. How can I see these labels on the `XYAreaChart`?

     // create the chart...
            final JFreeChart chart = ChartFactory.createXYAreaChart(
                    header_label, // chart title
                    x_label, // x axis label
                    y_label, // y axis lsabel
                    dataset, // data
                    PlotOrientation.VERTICAL,
                    includeLegend, // include legend
                    true, // tooltips
                    false // urls
                    );
    
            // NOW DO SOME OPTIONAL CUSTOMIZATION OF THE CHART...
            chart.setBackgroundPaint(Color.white);
    
            // get a reference to the plot for further customization...
            final XYPlot plot = chart.getXYPlot();
            plot.setBackgroundPaint(Color.lightGray);
            plot.setDomainGridlinePaint(Color.white); // X Axis is Domain
            plot.setRangeGridlinePaint(Color.white);  // Y Axis is Range
    
            // Allow lines and shapes to be visible
            renderer1 = new XYAreaRenderer();
    
            // Set the tooltip generator
            renderer1.setBaseToolTipGenerator(toolTipGenerator);
            
            NumberFormat.getNumberInstance().setMaximumFractionDigits(2);
    //        renderer1.setBaseItemLabelGenerator(new StandardXYItemLabelGenerator("{0} {1} {2}", NumberFormat.getNumberInstance(), NumberFormat.getNumberInstance()));
            renderer1.setBaseItemLabelGenerator(new StandardXYItemLabelGenerator("test  {0} {1} {2}", NumberFormat.getNumberInstance(), NumberFormat.getNumberInstance()));
            
            renderer1.setBaseItemLabelsVisible(true);
    
            plot.setRenderer(renderer1);