">val</span> proc_desc : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> <a href="../../../../IR/Procdesc/index.html#type-t">IR.Procdesc.t</a></span></code></div></div><div class="odoc-spec"><div class="spec value" id="val-fold_nodes" class="anchored"><a href="#val-fold_nodes" class="anchor"></a><code><span><span class="keyword">val</span> fold_nodes : <span><span>( <a href="#type-t">t</a>, <a href="../../DefaultNode/index.html#type-t">Node.t</a>, <span class="type-var">'accum</spa