fill the area with color in time series jfreechart

I am trying to generate a time series with the area underneath filled with color.

Looking at examples of the jfreechart library there is this method:


However the dataset required is a Category dataset, something quite different from the Time Series Dataset that I currently create:


Which methods should I use to fill with color the area underneath the plotted line?

Thank you!

Add the following after you create the a chart (usingcreateTimeSeriesChart)

XYPlot plot = (XYPlot) chart.getPlot();
plot.setRenderer(new XYAreaRenderer());
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