code: @Override
      public int compareTo(final NodeID that) {
  
          // Fail fast
          if (that == this) {
              return 0;
          } else if (null == that) {
              return -1;
          }
  
          // Delegate to internal state
          return this.getId().compareTo(that.getId());
      }
docs: Compares the supplied NodeID to this one.
  
  @param that A NodeID to compare to this one.
  @return THe difference in