How can I use reflection to get a reference to a lambda that I can pass around?

I can use reflection to dynamically get a method and call it. How can I do the same with a lambda? IE something like

class Foo{
    public static String mapper(Object o){
        return "dummy val";
    }
}

class Bar {
    public static void main(String args[]){
        String[] arr = {"a", "b", "c"};
        Lambda reflectedMapper = ReflectionUtils.getLambda("Foo.mapper");//How do I actually write this line?
        List<String> mapped = arr.stream().map(reflectedMapper).collect(Collectors.toList();
    }
}