@Override
 public String toString() {
   return this.getClass().getName()
       + "(bundleIdPrefix="
       + Packet.binToHex(this.bundleIdPrefix)
       + ", offset="
       + this.offset
       + ", messageTime="
       + this.messageTime
       + ")";
 }
 public String bundleIdPrefixHex() {
   return Packet.binToHex(this.bundleIdPrefix);
 }