">type</span> t</span><span> =
  <a href="../../../../../../../../Absint/ProcCfg/DefaultNode/IdSet/index.html#type-t">Absint.AbstractInterpreter.MakeBackwardRPO(Checkers.Liveness.PreAnalysisTransferFunctions(Absint.ProcCfg.Backward(Absint.ProcCfg.Exceptional))).TransferFunctions.CFG.Node.IdSet.t</a></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-empty"><a href="#val-empty" class="anchor"></a><code><span><span class="keyword">val</span> empty : <a href="#type-t">t</a