<code class="computeroutput"><span class="identifier">polymorphic_allocator</span></code></a>, the caller
        must ensure that the lifetime of the resource is extended until it is no
        longer referenced by any variables; otherwise, undefined behavior is possible.
      </p>
<p>
        Shared ownership is achieved using the function <a class="link" href="../ref/boost__json__make_shared_resource.html" title="make_shared_resource"><code class="computeroutput"><span class="identifier">make_shared_res