Method remove

lib/java/util/TreeMap.java:716–723

(Object key)

        }

        @SuppressWarnings("unchecked")
        @Override
        public V remove(Object key) {
            if (isInRange((K) key)) {
                return backingMap.remove(key);
            }
            return null;
        }

        public SortedMap<K, V> subMap(K startKey, K endKey) {
            checkRange(startKey);