@Override
public ItemStack getStackInSlotOnClosing(int slot) {
if (!formed) return null;
TileEntityBottlingMachine master = master();
if (master != null) return master.getStackInSlotOnClosing(slot);
ItemStack stack = getStackInSlot(slot);
if (stack != null) setInventorySlotContents(slot, null);
return stack;
}
