><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Signature<span class="special">&gt;</span> 
    <span class="identifier">constructor</span><span class="special">&lt;</span> <span class="identifier">Signature</span> <span class="special">&gt;</span> <a class="link" href="smart_library.html#idp28648928-bb"><span class="identifier">get_constructor</span>