span>.IStd.Caml.Map.S <span class="keyword">with</span> <span><span class="keyword">type</span> <span class="xref-unresolved">key</span> = <span class="xref-unresolved">t</span></span></span></code></summary><div class="odoc-spec"><div class="spec type anchored" id="type-key"><a href="#type-key" class="anchor"></a><code><span><span class="keyword">type</span> key</span><span> = <a href="../index.html#type-t">t</a></span></code></div></div><div class="odoc-spec"><div class="spec type anchored" id="type-t"><a