//control.setOnThresholdExceeded(observable -> System.out.println("Threshold exceeded") );
//control.setOnThresholdUnderrun(observable -> System.out.println("Threshold underrun"));
marker0 = new Marker(25);
//marker0.setOnMarkerExceeded(observable -> System.out.println("Marker exceeded"));
//marker0.setOnMarkerUnderrun(observable -> System.out.println("Marker underrun"));
control.addMarker(marker0);