The following produces a rawtype warning, even though the type is used as a qualifier of a method reference.  Generally, rawtype warnings do not occur in this context, but something strange about this case is triggering it.  (Hint: removing the wildcard will make the warning go away.)

    void test(Box<? extends Box<Number>> b) {
        Number n = b.<Number>map(Box::get).get();
    }

    interface Func<S,T> { T apply(S arg); }

    interface Box<T> {
        T get();
        <R> Box<R> map(Func<T,R> f);
    }


warning: [rawtypes] found raw type: Box
        Number n = b.<Number>map(Box::get).get();
                                 ^
  missing type arguments for generic class Box<T>
  where T is a type-variable:
    T extends Object declared in interface Box