question: public void readNBT ( NBTTagCompound nbt ) { if ( nbt . hasKey ( "decayLevel" , 99 ) ) { this . decayLevel = nbt . getInteger ( "decayLevel" ) ; this . decaySaturationLevel = nbt . getFloat ( "decaySaturationLevel" ) ; this . decayAccelerationLevel = nbt . getFloat ( "decayExhaustionLevel" ) ; } }
target:  Reads the decay stats from NBT