public void writeToNBT(NBTTagCompound nbttagcompound) {
   super.writeToNBT(nbttagcompound);
   NBTTagList nbttaglist = new NBTTagList();
   for (int i = 0; i < storage.length; i++) {
     if (storage[i] != null) {
       NBTTagCompound nbttagcompound1 = new NBTTagCompound();
       nbttagcompound1.setByte("Slot", (byte) i);
       storage[i].writeToNBT(nbttagcompound1);
       nbttaglist.appendTag(nbttagcompound1);
     }
   }
   nbttagcompound.setTag("Items", nbttaglist);
   nbttagcompound.setByte("woodType", woodType);
 }
  public void writeToNBT(NBTTagCompound nbttagcompound) {
    super.writeToNBT(nbttagcompound);
    // nbttagcompound.setInteger("timeleft", timeleft);

    NBTTagList nbttaglist = new NBTTagList();
    for (int i = 0; i < metalItemStacks.length; i++) {
      if (metalItemStacks[i] != null) {
        NBTTagCompound nbttagcompound1 = new NBTTagCompound();
        nbttagcompound1.setByte("Slot", (byte) i);
        metalItemStacks[i].writeToNBT(nbttagcompound1);
        nbttaglist.appendTag(nbttagcompound1);
      }
    }

    nbttagcompound.setTag("Items", nbttaglist);
  }