29    private function __construct(){
 
   33    public const HEIGHTMAP_AND_3D_BIOMES = 
"\x2b";
 
   34    public const NEW_VERSION = 
"\x2c"; 
 
   35    public const HEIGHTMAP_AND_2D_BIOMES = 
"\x2d"; 
 
   36    public const HEIGHTMAP_AND_2D_BIOME_COLORS = 
"\x2e"; 
 
   37    public const SUBCHUNK = 
"\x2f";
 
   38    public const LEGACY_TERRAIN = 
"\x30"; 
 
   39    public const BLOCK_ENTITIES = 
"\x31";
 
   40    public const ENTITIES = 
"\x32";
 
   41    public const PENDING_SCHEDULED_TICKS = 
"\x33";
 
   42    public const LEGACY_BLOCK_EXTRA_DATA = 
"\x34"; 
 
   43    public const BIOME_STATES = 
"\x35"; 
 
   44    public const FINALIZATION = 
"\x36";
 
   45    public const CONVERTER_TAG = 
"\x37"; 
 
   46    public const BORDER_BLOCKS = 
"\x38";
 
   47    public const HARDCODED_SPAWNERS = 
"\x39";
 
   48    public const PENDING_RANDOM_TICKS = 
"\x3a";
 
   49    public const XXHASH_CHECKSUMS = 
"\x3b"; 
 
   50    public const GENERATION_SEED = 
"\x3c";
 
   51    public const GENERATED_BEFORE_CNC_BLENDING = 
"\x3d";
 
   53    public const OLD_VERSION = 
"\x76";