@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((code == null) ? 0 : code.hashCode());
		result = prime * result + ((numberOfWholesaleProducts == null) ? 0 : numberOfWholesaleProducts.hashCode());
		result = prime * result + ((price == null) ? 0 : price.hashCode());
		result = prime * result + ((wholesalePrise == null) ? 0 : wholesalePrise.hashCode());
		return result;
	}