public async void LoadHousehold()
        {
            var household = await PersistenceFacade.LoadHouseholdJason();

            Singelton.GetInstance().Households.Clear();
            if (household != null)
            {
                foreach (var house in household)
                {
                    Singelton.GetInstance().Households.Add(house);
                }
            }
        }
 public async void SaveHousehold()
 {
     PersistenceFacade.SaveHouseholdJason(Singelton.GetInstance().Households);
 }