code: public void updateCpu(int cpu) {
  		if (cpu < 0 || cpu > 100) {
  			throw new BrokerOptionsError("Invalid CPU value (" + cpu + ")!", nodeID);
  		}
  		if (this.cpu != cpu) {
  			this.cpu = cpu;
  			cpuSeq++;
  		}
  		cpuWhen = System.currentTimeMillis();
  	}
docs: --- UPDATE CPU ---