@Override
    public String toString() {
      return "ASCENDING";
    }
Used to describe or modify the lexicographical sort order of a {@code byte[]}. Default ordering
is considered {@code ASCENDING}. The order of a {@code byte[]} can be inverted, resulting in
{@code DESCENDING} order, by replacing each byte with its 1's compliment.
hbase-common/src/main/java/org/apache/hadoop/hbase/util/Order.java