public TmxTileset()
 {
     TileOffset = new TmxTileOffset();
     Tiles = new List<TmxTile>();
     Properties = new List<TmxProperty>();
     TerrainTypes = new List<TmxTerrain>();
 }
 public TmxTileset()
 {
     TileOffset   = new TmxTileOffset();
     Tiles        = new List <TmxTile>();
     Properties   = new List <TmxProperty>();
     TerrainTypes = new List <TmxTerrain>();
 }