Method createMapDataPacket

src/main/java/net/minecraft/item/ItemMap.java:254–257

(ItemStack stack, World worldIn, EntityPlayer player)

    }

    public Packet createMapDataPacket(ItemStack stack, World worldIn, EntityPlayer player)
    {
        return this.getMapData(stack, worldIn).getMapPacket(stack, worldIn, player);
    }

    /**
     * Called when item is crafted/smelted. Used only by maps so far.