Method comparator

lib/java/util/Collections.java:3597–3599

@see java.util.SortedMap#comparator()

()

         * @see java.util.SortedMap#comparator()
         */
        public Comparator<? super K> comparator() {
            return sm.comparator();
        }

        /**
         * @see java.util.SortedMap#subMap(Object, Object)