[1.11.2] BiomeDictionary getBiomes() not working

I am trying to use BiomeDictionary for spawning and the BiomeDictionary.getBiomes(Type t) method returns zero biomes for any given type. What am I doing wrong? I call this method for testing in postInit. (I've tried preInit and Init as well).

...
listBiomes(Type.HOT, Type.DRY, Type.SANDY);
...

private void listBiomes(Type... types) {
	for (Type t : types) {
		Set<Biome> biomes = BiomeDictionary.getBiomes(t);
  		if (biomes.size() == 0) {
  			proxy.info(t.getName() + ": no biomes found");
  		} else {
  			for (Biome b : biomes) {
  				proxy.info(t.getName() + ": " + b.getBiomeName());
  			}
  		}
  	}
}

[15:33:17] [Client thread/INFO] [FML]: HOT: no biomes found
[15:33:17] [Client thread/INFO] [FML]: DRY: no biomes found
[15:33:17] [Client thread/INFO] [FML]: SANDY: no biomes found

This is the output.

The code can be found at Github