How to define virtual (computable) property?

[c-smile]

I have C++ class:

class Foo {
   int get_bar();
   void set_bar( int v );
}

and I'd like to wrap it as JS class that has bar defined as instance property.

As far as I can see .fun() allows to wrap either member variables or methods of a class, but not virtual properties represented by getter/setter pair, am I correct?