Bukkit/Bukkit — pull request #507 by dumptruckman (2012-01-31 15:45:46+00:00)
Title: Added entity id's as per http://www.minecraftwiki.net/wiki/Data_values#Entity_IDs

Calling it TypeId as to not confuse it with an entity instance's entityId.
MONSTER was removed from MC so put null. Should it have been zombie?