Diskmaster/Multiverse-Core — comment on commit e03ede60ef9caa8be006287f83f00c1ebeb6a8dd
File:  line 0
By FernFerret:

I actually had this code in there, but this will not work. The `worldtype` is stored in the NBT, thus making this param unnecessary. The environment is required because it is _not_ stored in the nbt. If you tell the worldcreator to load a normal world as a flat one, it will read the nbt and override you.