@Override
        public int compare(final Object first, final Object second) {
            throw new UnsupportedOperationException("Order.shuffle should not be used as an actual Comparator - it is a marker only");
        }
Order in a random fashion. While this enum implements {@code Comparator}, the {@code compare(a,b)} method is not
supported as a direct call. This change to the implementation of {@code compare(a,b)} occurred at 3.5.0 but
this implementation was never used directly within the TinkerPop code base.

@since 3.0.0-incubating
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/Order.java