@Override
 public LongAssert usingDefaultComparator() {
   super.usingDefaultComparator();
   this.longs = Longs.instance();
   return myself;
 }
 @Override
 public LongAssert usingComparator(Comparator<? super Long> customComparator) {
   super.usingComparator(customComparator);
   this.longs = new Longs(new ComparatorComparison(customComparator));
   return myself;
 }