private void processCancelledJobsInPriorityQ() {
		for (GScheduledTask task : priorityQ) {
			taskCompleted(task, new CancelledException());
		}
		priorityQ.clear();
		if (runningGroup != null) {
			notifyGroupCompleted(runningGroup);
			runningGroup = null;
		}
	}
Cancels all scheduled groups and tasks. The TaskMonitor for
the currently running task will be cancelled, but the task will continue to run until it
checks the monitor.
Ghidra/Framework/Project/src/main/java/ghidra/framework/task/GTaskManager.java