Terraria.TileObjectData.GetTileData C# (CSharp) Method

        public static TileObjectData GetTileData(int type, int style, int alternate = 0)
        {
            if (type < 0 || type >= TileObjectData._data.Count)
                throw new ArgumentOutOfRangeException("Function called with a bad type argument");
            if (style < 0)
                throw new ArgumentOutOfRangeException("Function called with a bad style argument");
            TileObjectData tileObjectData1 = TileObjectData._data[type];
            if (tileObjectData1 == null)
                return (TileObjectData)null;
            List<TileObjectData> subTiles = tileObjectData1.SubTiles;
            if (subTiles != null && style < subTiles.Count)
            {
                TileObjectData tileObjectData2 = subTiles[style];
                if (tileObjectData2 != null)
                    tileObjectData1 = tileObjectData2;
            }
            --alternate;
            List<TileObjectData> alternates = tileObjectData1.Alternates;
            if (alternates != null && alternate >= 0 && alternate < alternates.Count)
            {
                TileObjectData tileObjectData2 = alternates[alternate];
                if (tileObjectData2 != null)
                    tileObjectData1 = tileObjectData2;
            }
            return tileObjectData1;
        }