CLASS cfu net/minecraft/fluid/Fluids FIELD a EMPTY Lcfr; FIELD b FLOWING_WATER Lcfq; FIELD c WATER Lcfq; FIELD d FLOWING_LAVA Lcfq; FIELD e LAVA Lcfq; METHOD a register (Ljava/lang/String;Lcfr;)Lcfr; ARG 0 id ARG 1 value