</span><span class="special">::</span><span class="identifier">add_const</span><span class="special">&lt;</span> <span class="identifier">T</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">type</span>         <a name="boost.unit_test.bt_iterator_tr_idp42113856.T_const"></a><span class="identifier">T_const</span><span class="special">;</span>       
  <span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span c