 <span class="arrow">&#45;&gt;</span></span> <span class="type-var">'b</span></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-pattern_022"><a href="#val-pattern_022" class="anchor"></a><code><span><span class="keyword">val</span> pattern_022 : <span><span><a href="argument-1-Operator/Symbol/Shape/Type/index.html#type-attr">Operator.Symbol.Shape.Type.attr</a> <a href="../../Owl_graph/index.html#type-node">Owl_graph.node</a></span> <span class="arrow">&#45;&gt;</span><