rence-Add_Torrent.html#client_data_t">client_data_t</a> is the userdata pointer as
passed in via <a class="reference external" href="reference-Add_Torrent.html#add_torrent_params">add_torrent_params</a>.</p>
<p>If the <a class="reference external" href="reference-Plugins.html#plugin">plugin</a> returns a <a class="reference external" href="reference-Plugins.html#torrent_plugin">torrent_plugin</a> instance, it will be added
to the new torrent. Otherwise, return an empty shared_ptr to a
<a class="reference ex