CLASS net/minecraft/class_3652 net/minecraft/world/biome/layer/AddRiversLayer
FIELD field_16160 RIVER_ID I
FIELD field_16162 MUSHROOM_FIELD_SHORE_ID I
FIELD field_16163 MUSHROOM_FIELDS_ID I
FIELD field_16164 SNOWY_TUNDRA_ID I
FIELD field_16165 FROZEN_RIVER_ID I
