</a><code><span><span class="keyword">val</span> exists_edge : 
  <span><a href="../../PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> <span class="arrow">&#45;&gt;</span></span>
  <span><a href="../index.html#type-t">t</a> <span class="arrow">&#45;&gt;</span></span>
  <span>f:
    <span>(<span><span>(<a href="../../PulseAccess/index.html#type-t">PulseAccess.t</a>
      * <span>(<a href="../../PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractV