Currently there exists no Composter InventoryType.

This becomes an issue when using code to filter out non-chest InventoryMoveItemEvents.

The below code works fine for chest-related hopper inventory siphoning.

	public void onHopperMoveItem(InventoryMoveItemEvent event) {
		if (!event.getSource().getType().equals(InventoryType.CHEST))
			return;

		Location loc = event.getSource().getLocation();
	}

However if the Hopper-Composter-Hopper auto-composter shown in the supplied image is built it will pass the above code's if statement. This is because Composters report a Chest InventoryType.

The above code will also throw an NPE when loc is set, as the getSource().getLocation() is null (probably related to the missing InventoryType somehow.)