question: @ Override public void writeEntityToNBT ( NBTTagCompound par1NBTTagCompound ) { par1NBTTagCompound . setShort ( "xTile" , ( short ) this . xTile ) ; par1NBTTagCompound . setShort ( "yTile" , ( short ) this . yTile ) ; par1NBTTagCompound . setShort ( "zTile" , ( short ) this . zTile ) ; par1NBTTagCompound . setInteger ( "inTile" , Block . getIdFromBlock ( this . inTile ) ) ; par1NBTTagCompound . setByte ( "inData" , ( byte ) this . inData ) ; par1NBTTagCompound . setByte ( "shake" , ( byte ) this . arrowShake ) ; par1NBTTagCompound . setByte ( "inGround" , ( byte ) ( this . inGround ? 1 : 0 ) ) ; par1NBTTagCompound . setBoolean ( "isExplosive" , this . isExplosive ) ; }
target:  (abstract) Protected helper method to write subclass entity data to NBT. 