public static function useCurrency($currency, $symbol = null)
    {
        static::$currency = $currency;

        static::useCurrencySymbol($symbol ?: static::guessCurrencySymbol($currency));
    }
public static function useCurrency($currency, $symbol = null)
    {
        static::$currency = $currency;

        static::useCurrencySymbol($symbol ?: static::guessCurrencySymbol($currency));
    }
public static function useCurrency ( $ currency , $ symbol = null ) { static :: $ currency = $ currency ; static :: useCurrencySymbol ( $ symbol ? : static :: guessCurrencySymbol ( $ currency ) ) ; }
Set the currency to be used when billing Stripe models.

@param  string  $currency
@param  string|null  $symbol
@return void
@throws \Exception
Set the currency to be used when billing Stripe models .