public static Money GetMoney(this ISharedPreferences sharedPref, string key)
{
sharedPref.CheckContains(key + AmountSuffix);
var amount = Convert.ToDecimal(sharedPref.GetFloat(key + AmountSuffix, 0));
var currency = sharedPref.GetCurrency(key + CurrencySuffix);
return(new Money(amount, currency));
}