public InsertStatus insert(ItemStack is, boolean force) {
		if (is == null || is.stackSize == 0)
			// Inserting null or an empty stack should change nothing
			return InsertStatus.SUCCESS;
		Iterator<Map.Entry<ICrate, ItemStackStorage>> i = map.entrySet()
				.iterator();
		for (ItemStackStorage v = null; i.hasNext(); v = i.next().getValue()) {
			if (v == null) { // shouldn't happen but who knows
				continue;
			}
			if (!v.isFull()) {

			}
		}
		return InsertStatus.SUCCESS;
	}