tring, int * <span>string option</span>)</span> Stdlib.result</span> <span>&#45;&gt;</span> unit)</span> <span>&#45;&gt;</span> unit</code></dt><dt class="spec value" id="val-post"><a href="#val-post" class="anchor"></a><code><span class="keyword">val</span> post : <span>?&#8288;meth:string</span> <span>&#45;&gt;</span> <span>?&#8288;content_type:string</span> <span>&#45;&gt;</span> <span>?&#8288;content:string</span> <span>&#45;&gt;</span> <span>?&#8288;headers:<span><span>(string * string)</span> list</s