Wrapper

         //This method is an example wrapper method
         //In this case the useless argument is the 0
        = "sum(double x, double y, int decimals)")
        public double sum(double x, double y) {
             return sum(x, y, 0);
        }

         //This method is an example wrapped method
         //In this case the wrapped argument is the decimals
        public double sum(double x, double y, int decimals) {
             return TradingTools.roundValue(x + y, decimals);
        }