@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((level == null) ? 0 : level.hashCode());
		result = prime * result + ((model == null) ? 0 : model.hashCode());
		result = prime * result + ((version == null) ? 0 : version.hashCode());
		result = prime * result + ((xmlns == null) ? 0 : xmlns.hashCode());
		return result;
	}