docs: @SuppressWarnings({"unchecked"})
    public final void isStrictlyOrdered(final Comparator<?> comparator) {
      checkNotNull(comparator);
      pairwiseCheck(
          "expected to be strictly ordered",
          new PairwiseChecker() {
            @Override
            public boolean check(Object prev, Object next) {
              return ((Comparator<Object>) comparator).compare(prev, next) < 0;
            }
          });
    }