long expectedResult = Arrays.stream(numbers).sum();
AdderBusinessLogic adder = new AdderBusinessLogic();
Arrays.stream(numbers).forEach(number -> adder.addToSum("foo", number));
long expectedResult = Arrays.stream(numbers).sum();
AdderBusinessLogic adder = new AdderBusinessLogic();
Arrays.stream(numbers).forEach(number -> adder.addToSum("foo", number));