="identifier">storage</span><span class="special">().</span><span class="identifier">is_shared</span><span class="special">()</span> <span class="special">);</span>              <span class="comment">// no shared ownership</span>
<span class="special">}</span>
</pre>
<p>
        When using a memory resource in this fashion, including the case where a
        storage pointer or container is constructed from a <a class="link" href="../ref/boost__json__polymorphic_allocator.html" title="polymorphic_allocator">