rage pointer is constructed this way, the lifetime of the referenced
        memory resource is extended until all variables which reference it are destroyed.
      </p>
<h5>
<a name="json.allocators.storage_ptr.h6"></a>
        <span class="phrase"><a name="json.allocators.storage_ptr.user_defined_resource"></a></span><a class="link" href="storage_ptr.html#json.allocators.storage_ptr.user_defined_resource">User-Defined
        Resource</a>
      </h5>
<p>
        To implement custom memory allocation strat