VisionThread Listener?

[SamCarlberg]

The listener is more or less a function that gets called every time the pipeline runs. You can write it as a lambda:

VisionThread visionThread = new VisionThread(usbCamera, myPipeline, () -> {
        // listener code here
    });

Otherwise you just have a class that implements VisionRunner.Listener. The lambda is good because it makes synchronization easier (see this screensteps page)