Method remove

src/main/java/org/mapdb/BTreeMapJava.java:667–673

(Object key)

        }

        @Override
        public V remove(Object key) {
            if(key==null)
                throw new NullPointerException("key null");
            K k = (K)key;
            return (!inBounds(k))? null : m.remove(k);
        }

        @Override
        public int size() {