#type-t">t</a> <span>&#45;&gt;</span> <span><span>(<a href="../Pulselib/PulseTrace/index.html#type-t">Pulselib.PulseBasicInterface.Trace.t</a> * <span><a href="../Pulselib/PulseInvalidation/index.html#type-must_be_valid_reason">Pulselib.PulseBasicInterface.Invalidation.must_be_valid_reason</a> option</span>)</span> option</span></code></dt><dt class="spec value" id="val-get_must_be_valid_or_allocated_isl"><a href="#val-get_must_be_valid_or_allocated_isl" class="anchor"></a><code><span class="keyword">val</s