</span>
<span class="keyword">public</span><span class="special">:</span>
  <span class="comment">// types</span>
  <span class="keyword">typedef</span> <span class="identifier">date_type</span><span class="special">::</span><span class="identifier">calendar_type</span>        <a name="boost.date_time.first_kday_before.calendar_type"></a><span class="identifier">calendar_type</span><span class="special">;</span>   
  <span class="keyword">typedef</span> <span class="identifier">calendar_type</span><span cla