如何在Java8中为Map、BiFunction和BiConsumer添加引用参数化？

Map<String, Integer> map = new HashMap<>();
map.put("A", 1);
map.put("B", 2);
map.forEach((key, value) -> System.out.println(key + ": " + value));

BiFunction<Integer, Integer, Integer> add = (a, b) -> a + b;
BiFunction<Integer, Integer, Integer> multiply = (a, b) -> a * b;
BiFunction<Integer, Integer, Integer> addAndMultiply = add.andThen(multiply);
int result = addAndMultiply.apply(2, 3);
System.out.println(result); // Output: 10

BiConsumer<String, Integer> printKeyAndValue = (key, value) -> System.out.println(key + ": " + value);
BiConsumer<String, Integer> printValueTwice = (key, value) -> System.out.println(value * 2);
BiConsumer<String, Integer> printKeyAndValueTwice = printKeyAndValue.andThen(printValueTwice);
printKeyAndValueTwice.accept("A", 2);