C++ equivalent of using for a java parameter/return type

Question

In java, to make a function that returns an object that is the same type as a parameter and extends a certain class, I would type:

Answer 1

Since I can't comment on the accepted answer, I'm providing a new answer which builds on it.

The template parameters can be simplified by having the enable_if condition become the default type template parameter instead of nullptr.

template::value>>