s="arrow">&#45;&gt;</span></span> <span><span class="type-var">'a</span> option</span>)</span> <span class="arrow">&#45;&gt;</span></span> <span><span class="type-var">'a</span> option</span></span></code></div><div class="spec-doc"><p>Find in the given node or its predecessors</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-get_loc"><a href="#val-get_loc" class="anchor"></a><code><span><span class="keyword">val</span> get_loc : <span><a href="#type-t">t</a> <span class="arrow