public void updateCraftingInventorySlot(Container container, int i, ItemStack itemstack) {
   if (container.getSlot(i) instanceof SlotCrafting) {
     return;
   }
   if (isChangingQuantityOnly) {
     return;
   } else {
     playerNetServerHandler.sendPacket(new Packet103SetSlot(container.windowId, i, itemstack));
     return;
   }
 }