How declare return type as inner class of template typename?

Question

How declare this:

template<typename T>
(T::ABC)& get();

it gives error:

error: expected constructor, destructor, or type conversion before ‘&’ token

Answer 1

Use the typename keyword:

template<typename T>
typename T::ABC& get();

Answer 2

It has to be:

template<typename T>
typename T::ABC& get();

but i tried, which don't works:

template<typename T>
(typename T::ABC)& get();