JFreeChart adding annotation to Gantt chart

I use Jfreechart for one week and I would like to add some annotations next to the bars in the Gantt chart. I know that it is possible for XYPlots and CategoryPlots but I don't 开发者_如何转开发find the solution for Gantt charts.

Can you help me ?

Thank You ;)

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A GanttChart has a CategoryPlot, so just use a CategoryAnnotation.