ypedef T*                   mapped_type;
        typedef T&amp;                   mapped_reference;
        typedef const T&amp;             const_mapped_reference;
        typedef ...                  value_type;
        typedef ...                  reference;
        typedef ...                  const_reference;
        typedef ...                  pointer;
        typedef ...                  const_pointer;

    public: // <a class="reference internal" href="#modifiers">modifiers</a>
        iterator  in