@Override
 public DoubleArrayAssert usingDefaultComparator() {
   super.usingDefaultComparator();
   this.arrays = DoubleArrays.instance();
   return myself;
 }
 @Override
 public DoubleArrayAssert usingComparator(Comparator<?> customComparator) {
   super.usingComparator(customComparator);
   this.arrays = new DoubleArrays(new ComparatorBasedComparisonStrategy(customComparator));
   return myself;
 }