117         typedef value_type&         reference;  typedef
136             reference operator*()   const { NW_NULL_ASSERT(m_pPointer); return *m_pPointer; }
168             typedef const_reference reference;  typedef
173             reference operator*()  const { NW_NULL_ASSERT(m_pPointer); return *m_pPointer;}
222         reference front()  in front()
232         reference back()  in back()
334     typedef value_type&        reference;       //!< @details :private  typedef
376         reference operator*()  const { pointer p = operator->(); NW_NULL_ASSERT(p); return *p;}
461         typedef const_reference reference;                                  //!< @details :private  typedef
482         reference operator*()  const { pointer p = operator->(); NW_NULL_ASSERT(p); return *p; }
628     reference       front()       { NW_ASSERT(!empty()); return *begin(); }  in front()
636     reference       back()        { NW_ASSERT(!empty()); return *--end(); }  in back()
870     reference       GetFront()       { return this->front(); }  //!< @details :private  in GetFront()
872     reference       GetBack()        { return this->back(); }   //!< @details :private  in GetBack()