html#type-t">InvariantMap.t</a></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>extract the state for a node id from the given invariant map</p></div></div></details></div><div class="odoc-spec"><div class="spec value anchored" id="val-get_cfg_metadata"><a href="#val-get_cfg_metadata" class="anchor"></a><code><span><span class="keyword">val</span> get_cfg_metadata : <span>unit <span class="arrow">&#45;&gt;<