For example:
class A
    {
    public:
       void AFoo();
    };
class B: private A
    {
    public:
       void BFoo();
    private:
       void BFooPrivate();
    };

In result, for class B documentation, I get two section:
Public Member Functions
 void   BFoo ()
Additional Inherited Members
 Private Member Functions inherited from Sgfx::A
 void   AFoo ()

BFooPrivate() is hidden becouse EXTRACT_PRIVATE = NO. But AFoo () is not hidden, although it is private! I try to set INLINE_INHERITED_MEMB = YES, but situation is similar:
Public Member Functions
 void   BFoo ()
Private Member Functions
 void   AFoo ()