107         return GetAddress();
112         return GetAddress();
117         return GetAddress() == nullptr;  in IsEmpty()
122         return IsEmpty() || GetAddress()->IsHole();  in IsNull()
127     inline T *GetAddress() const  in GetAddress()  function
209         return GetAddress();
214         return GetAddress();
219         return GetAddress() == nullptr;  in IsEmpty()
236     inline T *GetAddress() const  in GetAddress()  function
306         return GetAddress();
311         return GetAddress();
316         return GetAddress() == nullptr;  in IsEmpty()
329     inline T *GetAddress() const  in GetAddress()  function