on" class="anchor"></a><code><span><span class="keyword">val</span> singleton : <span><a href="../../../IBase/Location/index.html#type-t">IBase.Location.t</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="../index.html#type-elem">elem</a> <span class="arrow">&#45;&gt;</span></span> <a href="#type-t">t</a></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-singleton_final"><a href="#val-singleton_final" class="anchor"></a><code><span><span class="keyword">va