E&gt; <span class="keyword">const</span> &amp; param_type;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;                <span class="comment">// Address (Implementation details)</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;                value_const_pointe