@Override public Iterator<K> iterator() {final Iterator<Entry<K, V>> iterator = delegate.entrySet().iterator();return new Iterator<K>();}

@ Override public Iterator < K > iterator ( ) { final Iterator < Entry < K , V > > iterator = delegate . entrySet ( ) . iterator ( ) ; return new Iterator < K > ( ) ; }
public override java.util.Iterator<K> iterator(){return new java.util.Hashtable<K, V>.KeyIterator(this._enclosing);}
