Block block = new Block {
ID = 1,
Modifier = 0
};
chunk.Blocks.SetBlock(ref block, 3,10,3);
chunk.Blocks.SetBlock(ref block, 4,20,4);
Console.WriteLine ("Block at 3,10,3: {0}", chunk.Blocks.HasBlock (3, 10, 3));
Console.WriteLine ("Block at 3,10,3: {0}", chunk.Blocks.HasBlock (4, 20, 4));