="Directory/index.html#type-handler_error">Directory.handler_error</a>)</span> Stdlib.result</span> Lwt.t</span>)</span></span> <span>&#45;&gt;</span> <span>bg:<span>(<span>(<span><span>(<a href="Directory/index.html#type-ws_frame">Directory.ws_frame</a>, <a href="Directory/index.html#type-handler_error">Directory.handler_error</a>)</span> Stdlib.result</span> <span>&#45;&gt;</span> unit)</span> <span>&#45;&gt;</span> <span>unit Lwt.t</span>)</span></span> <span>&#45;&gt;</span> Uuidm.t <span>&#45;&gt;</sp