private static void UpdatePhone(Housing item, int order, string phone)
{
var housingPhone = item.Phones.SingleOrDefault(x => x.Order == order);
if (housingPhone != null)
{
housingPhone.Number = phone;
}
else if(!string.IsNullOrEmpty(phone))
{
housingPhone = new HousingPhone { Number = phone, Order = order };
item.Phones.Add(housingPhone);
}
}
