get/set/touch

gistfile1.cpp

class A
{
public:
   const B& getB() const
   {
       return _myB;
   }
   void setB(const B& newB) const
   {
       _myB = newB;
   }
   B& touchB()
   {
       return _myB;
   }
private:
   B _myB;
}