http://www.minecraftforum.net/topic/1721480-mob-spawning-observations-and-tests/page__st__140#entry21777563

Spawns from the Chunk provider are not called, for obvious reasons. For those biomes that require it, a BiomeHandler should be created and called with the biome instance.

An interface with a few required methods to generalize the configuration and calls are required

• List of structure spawn types
• List of spawnables dependent on supplied type
• If the coords are a particular type

Closed via 4b4c6ef