Invient chart and bars titles

I am using Invient chart in my Vaadin application. The titles bellow the chart can be max 12 chars otherwise they are unreadable.
It would be nice if I could rotate the titles 45 or 90 degrees. Would this be possible to do?


Adjust for your axis type:

NumberXAxis xAxis = new NumberXAxis();
xAxis.setLabel(new XAxisDataLabel());