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  <span><a href="../../PulseAbstractValue/index.html#type-t">PulseBasicInterface.AbstractValue.t</a> <span class="arrow">&#45;&gt;</span></span>
  <span>?null_noop:bool <span class="arrow">&#45;&gt;</span></span>
  <span><a href="../index.html#type-t">t</a> <span class="arrow">&#45;&gt;</span></span>
  <span><span><span>( <a href="../index.html#type-t">t</a>,
    <span>[&gt; <span>`ISLError of <a href="../index.html#type-t">t</a></span>
    <span><span>| `