@Override
 	public String toString() {
 		return "MESSAGE(MULTICASTMESSAGE)\n{"+ source +"->"+ dest +" seqNum:"+ seqNum +" duplicate:"+ duplicate +" kind:"+ kind
 				+" data:"+ data +" \nTIMESTAMP[:" + this.timeStamp + " ]\nACK:" + this.acknowledgement + "} "
 				+ "\nGROUPCLOCK = {" + clockForGroup.toString() + "}";
 	}