private boolean queueEvent(FileSystemEvent ev) {
		if (state == ThreadState.RUNNING) {
			return eventQueue.add(ev);
		}
		return false;
	}
Queue specified event if listener thread is running
@param ev filesystm event
@return true if queued, else false if listener thread not running
Ghidra/Framework/FileSystem/src/main/java/ghidra/framework/store/FileSystemEventManager.java