115         typedef value_type&         reference;  typedef
134             reference operator*()   const { NW_NULL_ASSERT(m_pPointer); return *m_pPointer; }
166             typedef const_reference reference;  typedef
171             reference operator*()  const { NW_NULL_ASSERT(m_pPointer); return *m_pPointer;}
220         reference front()  in front()
230         reference back()  in back()
331     typedef value_type&        reference;       //!< @details :private  typedef
373         reference operator*()  const { pointer p = operator->(); NW_NULL_ASSERT(p); return *p;}
458         typedef const_reference reference;                                  //!< @details :private  typedef
479         reference operator*()  const { pointer p = operator->(); NW_NULL_ASSERT(p); return *p; }
625     reference       front()       { NW_ASSERT(!empty()); return *begin(); }  in front()
633     reference       back()        { NW_ASSERT(!empty()); return *--end(); }  in back()
867     reference       GetFront()       { return this->front(); }  //!< @details :private  in GetFront()
869     reference       GetBack()        { return this->back(); }   //!< @details :private  in GetBack()