e&lt;FormatTag, Device&gt;,</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;            is_format_tag&lt;FormatTag&gt;</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;        &gt;::value</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    &gt;::type* <span class="comment">/*dummy*/</span> = <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>