Multiverse/Multiverse-Core — comment on commit 2eb61af76f583b4e33b3c266980e45b751b23ddb
File: src/main/java/com/onarandombox/MultiverseCore/api/MVWorldManager.java line 43
By FernFerret:

Needed so I can specify a `null` generate structures value. Not that it technically matters, since the world creator will ignore if it differs from the NBT.