an class="special">(</span><span class="keyword">const</span> <span class="identifier">context</span> <span class="special">&amp;</span> context <span class="special">=</span> <span class="identifier">system</span><span class="special">::</span><span class="identifier">default_context</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><a name="idp36255408-bb"></a><span class