more doc work

Author: jll63

include/boost/openmethod/core.hpp

@@ -1643,6 +1643,13 @@ class virtual_ptr<
             traits::template cast<other_smart_ptr>(std::move(obj)), vp);
     }
 
+    //! Construct a `virtual_ptr` from a smart pointer to an object
+    //!
+    //! This function forwards to @ref final_virtual_ptr.
+    //!
+    //! @tparam Other The type of the argument
+    //! @param obj A reference to an object
+    //! @return A `virtual_ptr<Class, Registry>` pointing to `obj`
     template<class Other>
     static auto final(Other&& obj) {
         return final_virtual_ptr<Registry>(std::forward<Other>(obj));