Código de Java - Expresiones recursivas lambda

@SuppressWarnings({ "rawtypes", "unchecked" })

public static Function<Integer, Function<Integer, Function>> myPowerTriFunction = x -> y -> f -> y == 0 ? 1 : x * (Integer) ((Function<Integer, Function<Integer, Function>>) f).apply(x).apply(y - 1).apply(f);

@SuppressWarnings("unchecked")

public static BiFunction<Integer, Integer, Integer> myPowerBiFunction = (x, y) -> (Integer) myPowerTriFunction.apply(x).apply(y).apply(myPowerTriFunction);

public static void main(String[] args) {

    System.out.println(myPowerBiFunction.apply(3, 5)); // prints 243

    System.out.println(myPowerBiFunction.apply(4, 6)); // prints 4096

}