@Override public boolean remove(Object key) {int count = 0;Collection<V> collection = subMap.remove(key);if (collection != null) {count = collection.size();collection.clear();totalSize -= count;}return count > 0;}

public override bool remove(object o){lock (this._enclosing){int oldSize = this._enclosing._size;this._enclosing.remove(o);return this._enclosing._size != oldSize;}}
