@Override
	public Set<java.util.Map.Entry<K, V>> entrySet() {
		HashSet<Entry<K, V>> hM = new HashSet<Entry<K, V>>();

		for (MapEntry<K, V> m : structure) {
			if (m != null)
				hM.add(m);
		}
		return (Set<java.util.Map.Entry<K, V>>) hM;

	}