
          
          <div class="features">read-only</div>
</dd>
        <dt id="errorCallback" class="property">
          <span class="name"><a href="dart-async/ZoneSpecification/errorCallback.html">errorCallback</a></span>
          <span class="signature">&#8594; <a href="dart-async/ErrorCallbackHandler.html">ErrorCallbackHandler</a></span>
        </dt>
        <dd>
          
          <div class="features">read-only</div>
</dd>
        <dt id="fork" class="property">
          <span class="name"><a 