public default <C> GraphTraversal<S, E> orderBy(final String key, final Comparator<C>... comparators) {
return this.addStep(new OrderByStep(this, key, comparators));
}
public default <C> GraphTraversal<S, E> orderBy(final T accessor, final Comparator<C>... comparators) {
return this.addStep(new OrderByStep(this, accessor, comparators));
}