"></a><span class="lineno">   39</span>  <span class="keyword">public</span> <a class="code hl_class" href="classboost_1_1system_1_1error__category.html">boost::system::error_category</a></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span>{</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span>  <span class="