keyword">val</span> return : <span>?&#8288;code:int</span> <span>&#45;&gt;</span> <span>?&#8288;headers:<span><span>(string * string)</span> list</span></span> <span>&#45;&gt;</span> <span class="type-var">'a</span> <span>&#45;&gt;</span> <span><span><span class="type-var">'a</span> <a href="Answer/index.html#type-t">Answer.t</a></span> Lwt.t</span></code></dt><dt class="spec value" id="val-return_ok"><a href="#val-return_ok" class="anchor"></a><code><span class="keyword">val</span> return_ok : <span>?&#828