on.t</a></code></dt><dd><p>Get the source location of the node</p></dd></dl><dl><dt class="spec value" id="val-get_preds"><a href="#val-get_preds" class="anchor"></a><code><span class="keyword">val</span> get_preds : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> list</span></code></dt><dd><p>Get the predecessor nodes of the current node</p></dd></dl><dl><dt class="spec value" id="val-get_siblings"><a href="#val-get_siblings" class="anchor"></a><code><span c