How to get Image from SWTBotTreeItem?

Question

So I have an Eclipse based application, that I need to write automated UI test for. The solution is, obviously, SWTBot. There is a TreeItem with an Image, that can (in the application code) be accessed with item.getImage(). How do I access the image from SWTBot if I have the correct SWTBotTreeItem? I have looked through the API docs and found nothing useful, googling also did not yield any relevant results.