public static void addTrackedTaskListener(TrackedTaskListener listener) {
		listeners.remove(listener); // don't double-add the listener
		listeners.add(listener);
	}
Adds a listener that will be notified when tasks are tracked (when they are added and
removed from tracking).
@param listener The listener to add.
Ghidra/Framework/Gui/src/main/java/ghidra/util/TaskUtilities.java