lass="line"><a name="l00074"></a><span class="lineno">   74</span>&#160; </div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;  <span class="keywordtype">void</span> upgrade();</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;  <span class="keywordtype">void</span> apply(<a class="code" href="classhelib_1_1_ctxt.html">Ctxt</a>&amp; ctxt) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00077"></a><span class="lineno">   