/**
* Remove the value which is associated with the given key. If the key does not exist, this method
* simply ignores the operation.
*
* @param key key whose associated value is to be removed
*/
public synchronized void remove(K key) throws IOException {
V val = null;
if (!recordListeners.isEmpty()) val = find(key);
_root.remove(key);
if (val != null) for (RecordListener<K, V> r : recordListeners) r.recordRemoved(key, val);
}
