public void clear() {
		allEventListeners.clear();
		toolListeners.clear();
		currentEvent = null;
		lastEventsByType.clear();
		listenersByEventType.clear();
		eventQ.clear();
	}
Clear last plugin events fired, current event, listeners, etc.
Ghidra/Framework/Project/src/main/java/ghidra/framework/plugintool/mgr/EventManager.java