public void add(I item) {
		lock.lock();
		try {
			queue.add(item);
			tracker.itemsAdded(1);
			fillOpenProcessingSlots();
		}
		finally {
			lock.unlock();
		}
	}
Adds the item to this queue for concurrent processing.
@param item the item to be scheduled for concurrent processing.
Ghidra/Framework/Generic/src/main/java/generic/concurrent/ConcurrentQ.java