>The <a class="link" href="concept_interface.html" title="Struct template concept_interface">concept_interface</a> class can be specialized to add behavior to an <a class="link" href="any.html" title="Class template any">any</a>. An <a class="link" href="any.html" title="Class template any">any</a> inherits from all the relevant specializations of <a class="link" href="concept_interface.html" title="Struct template concept_interface">concept_interface</a>.</p>
<p><a class="link" href="concept_interface.html