ve_handle()` that</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span><span class="comment"> * makes an `null() == true` one) and move (`Native_handle(Native_handle&amp;&amp;)` that nullifies the source object).</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span><span class="comment"> * This isn&#39;t allowed in aggregate-initializable classes; so then I made some `static` &quot;constructors&quot; instead; but</span><