-crumb">addError abstract method</li>
    </ol>
    
    <h5>SynchronousStreamController class</h5>
    <ol>
      <li class="section-title"><a href="dart-async/SynchronousStreamController-class.html#constructors">Constructors</a></li>
      <li><a href="dart-async/SynchronousStreamController/SynchronousStreamController.html">SynchronousStreamController</a></li>
    
      <li class="section-title inherited">
        <a href="dart-async/SynchronousStreamController-class.html#instance-properties">Properties<