an>, <span class="type-var">'input</span>, <span class="type-var">'output</span>)</span> <a href="../../../EzAPI/Legacy/index.html#type-post_service2">EzAPI.Legacy.post_service2</a></span></code></dt><dt class="spec type" id="type-api_result"><a href="#type-api_result" class="anchor"></a><code><span class="keyword">type</span> <span>('output, 'error) api_result</span></code></dt></dl><dl><dt class="spec value" id="val-get0"><a href="#val-get0" class="anchor"></a><code><span class="keyword">val</span> get0