Could someone give me an example about how to use the getInProgressBar() function for Renkos?

I want to get some details about the currently forming Renko bar:
Let's suppose I have a strategy that has onFeedData(). This function is called whenever a Renko brick is finished. The feedData parameter is the finished bar, but I need some details (high and low) about the brick that is being created.

I guess the getInProgressBar() function would give me this brick, but I haven't figured out how to use it in a strategy.

Thanks in advance.

Little update on this:

    @Override
    public void onFeedData(IFeedDescriptor feedDescriptor, ITimedData feedData) {
        try {
            IRenkoBar renko = history.getRenkoBar(instrument, feedDescriptor.getOfferSide(), feedDescriptor.getPriceRange(), 0);
            IRenkoBar getin  = renko.getInProgressBar();
            if (getin != null)
                print("last getin=%s", getin);
            else
                print("getin null");
            }
        } catch (JFException e) {
            console.getErr().println(e);
            e.printStackTrace();
        }
    }

This code always prints "getin null", so there is no way to get this inProgressBar.

Could this issue be related to this bug, which is about the feedData is not delivering the last formed brick?

The getInProgressBar() will return a non-null result only if the current market price is outside the last constructed renko brick.